Isabella regularly appears for both developers and local authorities in complex planning appeals, often involving disputes over housing land supply. She frequently appears against silks at planning inquiries. 

Through her appeal work, Isabella has gained experience of a wide ambit of planning matters, including the Green Belt, where she has appeared at two inquiries into proposals for large-scale cemeteries in the Green Belt; promoted an energy storage facility; and appeared at both planning and enforcement inquiries relating to gypsy and traveller sites in the Green Belt. Her residential experience includes numerous tall-building cases in London, where she has successfully resisted two tall-building schemes in east London for the London Legacy Development Corporation. Her planning work often raises heritage as well as design issues. For example, she appeared at a seven-week inquiry into the proposed redevelopment of a Grade I listed mansion set in a Grade I Registered Park and Garden in Hampshire. Isabella has also appeared at a number of inquiries relating to employment schemes. She has experience of both promoting and resisting large-scale employment proposals on greenfield sites at motorway junctions and has appeared at inquiries that raise issues regarding the loss of existing employment land to housing development. Isabella advises regularly on neighbourhood planning matters and has successfully appeared in two court challenges to neighbourhood planning decisions.

Recent examples of Isabella’s planning appeal work include:

• Acting for a renewable energy company in successfully promoting a 49.9MW solar farm scheme at a two-week planning inquiry
• Acting for the London Legacy Corporation in successfully resisting three appeals (each separate inquiry spanning two-weeks) for tall buildings in the Olympic Park Opportunity Area
• Acting for a successful developer in promoting a residential development of 100 dwellings on a greenfield site outside the settlement boundary of Oakham in Rutland in circumstances where the local authority could not demonstrate a five year supply of housing land
• Acting for the successful developer in an appeal against the refusal of planning permission for a self-storage facility in Camden, in a two-week planning inquiry
• Acting for the successful developer in promoting a residential scheme of 30 dwellings refused permission by the local authority on landscape and biodiversity grounds. The local authority withdrew its reasons for refusal following cross-examination of its planning witness.
• Acting for Harrow Council in a 5-day inquiry in successfully resisting a residential-led mixed use development of 3-7 storeys that adversely affected the character  and appearance of the area, and in particular a local allotment
• Acting for Worthing Council in a two-week planning inquiry in successfully resisting an appeal for major housing development on a site designated as a green gap in the Local Plan
• Acting for Hillingdon Council in a 7-day inquiry in successfully resisting a residential scheme for 233 apartments and a health facility that was refused on the basis of the appellant’s failure to satisfy the flood risk sequential test

Isabella has been involved in numerous DCOs, both promoting and resisting nationally significant infrastructure projects. She has considerable experience of the DCO procedure and is a contributing author to the 'National Infrastructure Planning Service' and 'National Infrastructure Planning Handbook', edited by Michael Humphries KC. Her experience covers a broad range of infrastructure projects, including nuclear and offshore wind; airports; carbon capture and road schemes. As part of her infrastructure practice, Isabella has significant experience of matters relating to EIA; HRA; consultation and land acquisition.

Her experience includes:

• Promoting the H2Teesside hydrogen project (as junior to Hereward Phillpot KC) on behalf of bp
• Promoting the Net Zero Teesside Project carbon capture project (as junior to Hereward Phillpot KC) on behalf of bp
• Promoting the Lower Thames Crossing (as junior to Andrew Tait KC) on behalf of Highways England
• Promoting Manston Airport (as junior to Michael Humphries KC), a scheme to reopen and develop Manston airport in Kent as a dedicated air freight facility. This was the first airport application to be considered under the Planning Act regime. Isabella is currently acting for the developer in resisting a judicial review challenge to the grant of development consent.
• Representing the owner of a sensitive biochemical testing site in the Sunnica Energy Farm DCO examination
• Representing East Suffolk Council (as junior to Andrew Tait KC) at the Sizewell C nuclear power station DCO examination
• Representing East Suffolk Council (as junior to Andrew Tait KC)  at the DCO examination into applications by Scottish Renewable Energy for the offshore windfarms, East Anglia One North and East Anglia Two 
• Promoting Heathrow Airport’s third runway scheme;
• Objecting to the Thanet Extension Offshore Windfarm on behalf of Ramac Holdings Ltd. The ExA accepted that the applicant had not made out the case for the acquisition of Ramac’s land and recommended that the compulsory acquisition should not be authorised. 
• Representing East and Suffolk Water (Northumbria Water Ltd) at the DCO examination into the third road-crossing of Lake Lothing in Lowestoft;
• Promoting Dong Energy’s application for the Walney Extension offshore wind farm. The DCO granted consent for the construction and operation of an offshore wind farm with a capacity of up to 750MW, located in the Irish Sea. 
• Promoting the development consent application for the improvement of the A30 trunk road, on behalf of Cornwall Council (as junior to Michael Humphries KC)
• Promoting the Yorkshire and Humber Carbon Capture and Storage DCO, a pipeline and associated infrastructure for the transportation of carbon dioxide on behalf of National Grid Carbon Ltd (as junior to Hereward Phillpot KC) 
• Promoting the Able Marine Energy Park on the River Humber (as junior to Gregory Jones KC) and representing Able Humber Ports Ltd at the Special Parliamentary Procedure (as junior to Simon Bird KC) and in respect of the subsequent judicial review challenge by ABP.
• Representing Natural Resources Wales at the DCO examination into the application for development consent Hirwaun Power Station in Wales 
• Representing a number of affected persons and the National Farmers Union on the Triton Knoll Electrical System DCO application

Isabella is highly regarded for her judicial and statutory review work. She appears regularly in the Courts for both applicants and defendants. The legal directories describe her as ‘one of the best juniors for planning JRs at the Bar’; ‘superb in court’; ‘calm, authoritative and persuasive’ and ‘known for her impressive advocacy skills’.

Recent or notable cases include:

• Ross v Secretary of State for Housing, Communities and Local Government and Renewable Energy Systems Ltd [2025] EWHC 1183 (Admin): Isabella acted for the successful developer (as junior to Hereward Phillpot KC) in resisting this statutory review challenge to the grant of planning permission for a 49.9MW solar farm. This was a test case on whether ‘overplanting’ solar farms for reasons other than to account for panel degradation over time was consistent with National Policy Statement EN-3. She also acted for the developer in the previous planning inquiry, in which permission was granted on appeal for the scheme.
• R (Boswell) v. (1) Secretary of State for Energy Security and Net Zero (2) Net Zero Teesside Power Ltd. (3) Net Zero North Sea Storage Ltd [2025] EWCA Civ 669: Isabella acted for the successful developer (as junior to Hereward Phillpot KC) in resisting this statutory review challenge to the grant of development consent for the Net Zero Teesside Carbon Capture and Storage Project. The challenge related to the Secretary of State’s treatment of the development’s greenhouse gas emissions and whether the development could be said to support the transition to net zero in light of those emissions.
• R (Spitalfields Historic Building Trust) v Tower Hamlets LBC [2025] UKSC 11: Isabella successfully represented the local authority (as junior to Hereward Phillpot KC in the Court of Appeal and Supreme Court and alone in the High Court) in resisting a judicial review challenge to its voting procedures. The Supreme Court judgment confirms that local authorities are entitled to restrict voting by councillors through their standing orders pursuant to the power in Schedule 12, paragraph 42 od the Local Government Act 1972.
• R (Dawes) v Secretary of State for Transport [2024[ EWCA Civ 560: Isabella acted for the successful developer (as junior to Michael Humphries KC) in resisting a statutory review challenge to the grant of development consent for the re-opening of Manston Airport as an air freight facility. The Court of Appeal confirmed that the Secretary of State had not acted in breach of the Infrastructure Planning (Examination Procedure) Rules 2010 in failing to give interested parties an opportunity to comment on an aviation report submitted by the developer. Nor did the developer’s decision not to disclose confidential information result in any procedural unfairness to the claimant.
• Moakes v Canterbury City Council [2024] EWHC 1272 (Admin): Isabella acted for the successful developer in resisting a judicial review challenge to the grant of planning permission for a large warehouse facility in the AONB. The Council had acted in breach of its constitution by failing to allow representatives of Natural England and CPRE to speak at the committee meeting, but the Court found that the claimant had suffered no prejudice as a result and so no error of law arose. Further grounds of challenge relating to the weight attributed to the views of statutory consultees and the need for consistency in decision-making were also rejected.
• R (Davis) v Oxford City Council [2023] WHC 1737 (Admin): Isabella acted for the successful local authority in resisting two conjoined judicial review challenges to the grant of planning permission for large-scale residential developments. The failure to publish the draft s.106 agreement on the Council’s website had resulted in no prejudice to the claimant and as such, no error of law arose. Nor was the failure to ensure the delivery of transport improvement works unlawful. Local planning authorities are entitled to take account of financial contributions towards infrastructure improvements without securing the delivery of those improvements.
• Persimmon Homes (Thames Valley) v Worthing BC [2023] EWCA Civ 762: Isabella acted for the successful local authority (leading Daisy Noble) in its statutory review challenge to the grant of planning permission on appeal for major residential development in the setting of the South Downs National Park. The Inspector had failed to have regard to the duty to give great weight to the conservation and enhancement of the landscape and scenic beauty of the National Park, in breach of (what was then) paragraph 176 of the NPPF and had failed to comply with his duty under s.11A of the National Parks and Access to Countryside Act 1949. As such, the grant of permission was quashed and remitted for redetermination. Isabella acted for the local authority in the subsequent inquiry to redetermine the appeal in successfully resisting the grant of permission.
• R (on the application of SAV Development Limited) v London Borough of Tower Hamlets [2021] EWHC 3211 (Admin): Isabella successfully resisted a judicial review application alleging that a Supplementary Planning Document seeking financial contributions towards the provision of affordable housing on development sites of less than ten dwellings was in conflict with the London Plan and therefore unlawful. The Court found that while a similar provision had been deleted from the London Plan at the direction of the Secretary of State, the mere absence of such a policy in the London Plan did not result in conflict with the SPD.
• R. (on the application of Hillingdon LBC) v Mayor of London [2021] EWHC 3387 (Admin): Isabella acted for the Mayor of London (as junior to Douglas Edwards KC) in successfully resisting a judicial review challenge by the London Borough of Hillingdon to the Mayor’s grant of planning permission for tall buildings. The buildings were not in a location identified as appropriate for tall buildings in Hillingdon’s Local Plan and the Council argued that in granting permission, the Mayor had misinterpreted the tall building policy in the London Plan, policy D9; had adopted a procedure that was unfair in failing to hold a second representation hearing once the London Plan had been adopted and in failing to disclose certain information pertaining to the air quality impacts of the development. The application was dismissed by Lang J, following a two-day substantive hearing.
• R (on the application of Wingfield) v Canterbury City Council [2020] EWCA Civ 1558: Isabella successfully resisted an application to re-open the decision refusing permission to appeal, pursuant to CPR rule 52.30. The Court of Appeal explained that finality of litigation was a general rule of high public importance particularly in planning cases. There were no exceptional circumstances to justify re-opening the refusal of permission to appeal
• Girling v East Suffolk Council [2020] EWHC 2579 (Admin): Isabella acted for East Suffolk Council (as junior to Andrew Tait KC) in successfully resisting a judicial review challenge to the grant of planning permission for preliminary works to facilitate the delivery of Sizewell C nuclear power station. The decision was challenged on the basis of the Council’s approach to major development in the AONB and its conclusions that the Environmental Statement was up to date as required by Regulation 26 of the EIA Regulation 2017, given the age of the survey data informing the ES.
• R (oao Wingfield) v Canterbury City Council [2019] EWHC 1974 (Admin): Isabella acted successfully for Canterbury CC in resisting a judicial review challenge to the grant of planning permission for residential development at a site known as Hoplands Farm. The court endorsed the Council’s approach of carrying out a Habitats Regulations Assessment at reserved matters stage in circumstances where no such assessment had been undertaken at outline permission stage on the basis of established case law prior to the ECJ judgment in People Over Wind.
• R (oao Wingfield) v Canterbury City Council [2019] EWHC 1975 (Admin): Isabella acted successfully for Canterbury City Council in resisting a judicial review challenge to the grant of planning permission for residential development at a site known as Chislet Colliery. The court rejected the suggestion that the Council should have treated the development at this site together with development proposed at an adjacent site as a single ‘project’ for the purposes of the EIA. 
• Gladman Developments Ltd v Canterbury City Council [2019] EWCA Civ 669: Isabella acted successfully for Canterbury City Council in challenging the Secretary of State's decision to grant planning permission for a housing development in Canterbury. The High Court quashed the Inspector's decision on the basis of his misinterpretation of permissively worded policies in the development plan. The Court of Appeal upheld that decision. In light of the Inspector's misinterpretation of policy, he had failed to discharge the s.38(6) duty and his decision could not stand.

Isabella has extensive experience of advising and representing claimants and acquiring authorities on compulsory purchase and compensation matters. The legal directories describe her as having ‘an excellent planning and compulsory purchase practice’ and giving ‘good commercial’ and ‘high quality’ advice.

Examples of Isabella’s CPO work include:

• Representing the claimant in a c.£30m compensation claim against HS2 (as junior to James Pereira KC). The heads of claim included r2 value of the acquired land, including a ransom claim; disturbance costs (the costs of relocating to replacement premises and of accelerating the construction programme to meet MS2’s programme); diminution in value to the retained land through severance and injurious affection and professional fees. The claim was settled following two days of evidence in the Upper Tribunal.
• Representing National Grid Electricity Transmission at a CPO inquiry into the Little Horsted Substation Connection CPO. The CPO was made to facilitate the reinforcement of the 132kV power network in order to maintain security of electricity supply to the Lewes/Newhaven area.
• Advising a claimant in respect of a compensation claim against HS2 for r2 value on the basis of Appropriate Alternative Development; severance/injurious affection to the retained land and losses arising from temporary possession.
• Representing a claimant in the Upper Tribunal in a disputed blight notice arising from the National Grid (Hinkley Point C Connection Project) DCO. 
•  Advising National Grid Electricity Transmission in respect of the Dinrowig to Pentir Cable Replacement Project CPO. The CPO was made to facilitate the replacement of two 400kV underground cables between Dinorwig Power Station and Pentir substation in Wales. Following NGET’s work to secure the withdrawal of all objections, the programmed CPO inquiry was vacated. 
• Acting for the claimant (as junior to Richard Glover KC) in a multi-million pound compensation claim arising from the acquisition of the Dreamland amusement park in Margate, which settled during the course of the Tribunal hearing. 
• Acting for Transport for London in defending a number of compensation cases arising from the Crossrail Project 
• Promoting the Reigate and Banstead town centre CPO
• Appearing for objectors at the Sugar House CPO inquiry in East London
• Advising London authorities on estate regeneration CPO proposals
• Successfully objecting to the exercise of compulsory purchase powers as part of the Thanet Offshore Windfarm Extension DCO.

Isabella regularly advises local authorities on the exercise of their powers and duties and represents them in planning appeals and statutory reviews.

Recent / notable examples include:

• R (on the application of Spitalfieds Historic Building Trust) v Tower Hamlets LBC [2022] EWHC 2262 (Admin): Isabella acted successfully for Tower Hamlets LBC in resisting a judicial review challenge to the voting procedure adopted by the local authority. The applicant alleged that certain members were unlawfully prevented from voting on the application. The Court held that the local authority’s procedural rule of preventing members from voting on deferred applications if they had not been present at the previous consideration was lawful.
• Worthing BC v Secretary of State for Levelling Up, Housing and Communities [2022] EWHC 2044 (Admin): Isabella successfully challenged the Secretary of State’s grant of permission on appeal for the development of a site proposed for designation as a Green Gap in the emerging Local Plan. The Court found that the Inspector had failed to assess the development against the relevant policies of the emerging Local Plan or to give weight to the adverse impacts of the development on the South Downs National Park.
• R (on the application of SAV Development Limited) v London Borough of Tower Hamlets [2021] EWHC 3211 (Admin): Isabella successfully resisted a judicial review application alleging that a Supplementary Planning Document seeking financial contributions towards the provision of affordable housing on development sites of less than ten dwellings was in conflict with the London Plan and therefore unlawful. The Court found that while a similar provision had been deleted from the London Plan at the direction of the Secretary of State, the mere absence of such a policy in the London Plan did not result in conflict with the SPD.
• R (oao Wingfield) v Canterbury City Council [2019] EWHC 1974 (Admin): Isabella acted successfully for Canterbury CC in resisting a judicial review challenge to the grant of planning permission for residential development at a site known as Hoplands Farm. The court endorsed the Council’s approach of carrying out a Habitats Regulations Assessment at reserved matters stage in circumstances where no such assessment had been undertaken at outline permission stage on the basis of established case law prior to the ECJ judgment in People Over Wind.
• Dudley Muslim Association v Dudley Metropolitan Borough Council [2015] EWCA Civ 1123: Isabella acted for the Dudley Muslim Association (as junior to David Matthias KC) in a dispute with the local authority over a land swap, by which the Association was required to return the site to the local authority in the event that the Mosque development was not completed by a certain date. As a result of the Council’s actions, it proved impossible to complete the Mosque by the relevant date. The Association resisted the Council’s attempt to enforce the agreement on the basis that the Council’s actions breached its legitimate expectation and amounted to an abuse of power.
• Representing a claimant in seeking a High Court declaration that a historic s.106 obligation requiring the transfer of a site to the Council for a nominal fee in the event a failure to deliver affordable housing on the site, is no longer enforceable.
   

In environmental law, Isabella's experience extends to Environmental Impact Assessments and Appropriate Assessments. In the High Court she has successfully defended challenges to the adequacy of EIA and HRA assessments in R (oao Wingfield) v Canterbury City Council [2019] EWHC 1974 (Admin) and R (oao Wingfield) v Canterbury City Council [2019] EWHC 1975 (Admin).

As part of her infrastructure work she has frequently advised clients about the implications of both the EIA and Habitats Regulations and has reviewed and advised clients on major applications as to the adequacy of their Environmental Statements and Habitats Regulation Assessments. Recent work for both developers and local authorities has involved matters relating to Nutrient Neutrality.
Isabella has advised the National Trust in relation to the implications of the UNESCO World Heritage Convention on planning decisions in the UK likely to adversely affect World Heritage Sites; and the Canal & Rivers Trust in relation to works in a SAC and SPA required to ensure the ongoing safety of reservoirs
Isabella co-authored a chapter in the Hart publication: The Habitats Directive: A Developer's Obstacle Course? (Edited by Gregory Jones KC), entitled 'Are Imperative Reasons Imperilling the Habitats Directive?'

• Contributor, National Infrastructure Planning Service and National Infrastructure Planning Handbook, Bloomsbury Professional
• Yes minister, but audi alteram partem, Solicitor's Journal, August 2016
• Changing Development Consent Orders, (with Hereward Phillpot KC), Local Government Lawyer, May 2016
• Untangling the knots in the golden thread - the NPPF and the delivery of sustainable development, Journal of Planning and Environment Law, 2015
• Staying the course?, Local Government Lawyer, December 2013
• Urgent injunctive relief and the giving of notice to local authorities, Local Government Lawyer, December 2013
• Neighbourhood planning under the Localism Act: the Daws Hill case, Local Government Lawyer, March 2013
• Local Government Precedents and Procedures, Planning update, 2012
• Are Imperative Reasons Imperilling the Habitats Directive? (with Rebecca Clutten), Habitats Directive: A Developer's Obstacle Course (Hart publishing, 2012)
• Reviewing earlier decisions: are public authorities required to reconsider a matter if it has already been determined by another authority? (with Ned Westaway), S.J. 2011, 155(44), 21
• Uncharted territory - the Bar's perspective on the National Planning Policy Framework (with Gregory Jones KC), S.J. 2011. 155(41) Supp (Bar Focus November 2011), 13-15
   

• Member of PEBA
• Member of NIPA
• Member of the CPA
• Member of the Denning Society, Lincoln's Inn

• Buchanan Prize, Lincoln's Inn, 2009
• Bar Vocational Course (Outstanding), The College of Law, 2009
• Graduate Diploma in Law (Distinction), The College of Law, 2007
• Lord Denning Scholarship, Lincoln's Inn, 2007
• Lord Brougham Scholarship, Lincoln's Inn, 2006
• Hardwicke Entrance Award, Lincoln's Inn, 2006
• BA(Hons) Modern History (II.I) , St Catherine's College, Oxford University, 2004
• St Catherine's College Scholarship, 2001

Prior to coming to the bar Isabella worked as a Programme Officer for an international NGO in Quito, Ecuador.  She speaks fluent Spanish.

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