Introduction
Harry Marriott is a specialist Business & Property barrister called to the Bar in 2018. He has established himself as a capable practitioner being described as “incredible in court” (Chambers & Partners, 2026) and “a tenacious and capable advocate” (Legal 500, 2026).
Harry is routinely instructed in a range of forums, acting to a level well beyond his year of call. Harry is keen to be involved in his cases at all stages of litigation and alternative dispute resolution. He is keen to be involved in his cases at an early stage of proceedings, providing advice, drafting letters before claim or statements of case.
Harry has substantial experience in real estate litigation, including:
- Complex possession claims
- Landlord and tenant disputes, including breaches of covenant and service charge disputes
- Lease extensions, renewals, terminations and dilapidations
- Enforceability of restrictive covenants, along with applications for modification and discharge
- Boundary disputes
- Applications under the Trust of Land and Appointment of Trustees Act 1996
- Enfranchisement
Significant real estate work that Harry has undertaken includes:
- An application for summary judgment on a claim for terminal dilapidations that was listed for two days in the High Court
- A group litigation regarding an allegedly defective tower block
- Being lead in the Upper Tribunal (Lands Chamber) on a case concerning the circumstances in which the doctrine of issue estoppel may arise when challenging the reasonableness of residential service charges
- An application to discharge and/or modify a restrictive covenant so as to enable the construction of a development of 8 houses and a block of 19 flats
Harry also undertakes work in commercial matters and prides himself on his ability to provide commercially pragmatic solutions to his client’s problems. He deals with a broad range of issues and was recently instructed by a large UK retailer in a costs and case management conference against a silk. He was recently instructed on a case concerning a company director wrongfully transferring land belonging to a company to his wife.
In court, Harry is a compelling and persuasive advocate, adopting a pragmatic and analytical outlook. He is always commended for his approachability, as well as his conscientious attitude and ability to tackle technical matters. He is always keen to achieve his client’s objectives in the most cost-effective manner. Harry also engages in significant business development, speaking at seminars and conferences regularly.
Notable cases
- Vernon v Orbit Housing Association [2026] UKUT 19 (LC) – An appeal concerning the extent to which issue estoppel may arise in the context of a challenge to the reasonableness of a residential service charge: https://www.iclr.co.uk/document/2026000523/2026ukut19lc_TNA/html
- Harry was led on a three-day mediation representing a landlord, who faced claims concerning the defective construction of a tower block, from a group of residents of the same.
- Advising on whether a third party can fund a settlement agreement between a landlord and a tenant as part of the development of a luxury hotel in central Birmingham.
- A case concerning the interaction between the service of a notice under section 21 of the Housing Act 1988 and the Assured Shorthold Tenant Notice and Prescribed Requirements (England) Regulations 2015 where Harry represented the landlord. The tenants sought permission to bring a second appeal to the Court of Appeal, but were unsuccessful.
- A multi-track trial concerning the beneficial ownership of a number of freehold properties and a taking of an account in respect of the same.
- A matter currently listed for a five-day multi-track trial concerning the validity of the transfer of a number of properties in the settlement of significant commercial debts.
Testimonials
Chambers and Partners 2026
“Harry is technically strong. A great details lawyer and very personable and well liked by clients.”
“He is incredible in court.”
Legal 500 2026
“Harry gives very clear and concise advice and is a rising star. He is a tenacious and capable advocate. His fees are very reasonable given the level and quality of service he provides.”
Chambers & Partners 2025
“Harry operates with a maturity beyond his year of call.”
“Harry is an excellent advocate.”
Legal 500 2025
‘Harry has proved himself capable not only with his drafting and advice, but also his negotiation skills. His advocacy and cross-examination skills impressive as well.’
‘Harry is an excellent advocate. He is always professional, pleasant with clients and witnesses, and gets good results. His advice is always practical.’
Chambers UK 2024
“Harry Marriott is a very knowledgeable advocate who is excellent on his feet as well as in giving advice.”
“Harry Marriott is an absolutely great barrister; his client care and knowledge is fantastic.”
“Harry Marriott has a great understanding of the sector and he is becoming a force to be reckoned with.”
