Thomson Reuters names eight Keystone Law partners in its Stand-out Lawyers Guide 2026
Andrea James, Andrew Darwin & Anna McKibbin
Property litigation specialist Greg advises on a wide range of commercial, residential and agricultural disputes.
Together with his general commercial property litigation work such as 1954 Act lease renewals, forfeiture and dilapidations, Greg is an expert in the casual dining industry and works with large national restaurant chains and landlords in the sector. His advice also includes property development issues such as conditional contracts, rights to light, and retention of deposits.
In relation to residential property, Greg assists with landlord and tenant issues, high-value land disputes, and residential possessions including high-value mortgage possession claims.
In relation to agricultural disputes, Greg has a focus on rural land disputes and agricultural tenancies (residential tenancies, farm business tenancies and licences) including possession proceedings. His rural land disputes work includes rights of way, prescriptive rights, nuisance, adverse possession and development issues.
Greg uses alternative dispute resolution wherever possible to resolve cases and has extensive mediation experience.
Greg is a qualified solicitor-advocate with Higher Rights of Audience (civil), with rights of audience in the High Court, Court of Appeal and the Supreme Court.
Greg advises clients on a wide range of commercial property disputes and involving complex issues around leases, covenants, enforcement, and property development.
Experience
Greg advises on residential property disputes, including claims under TOLATA, proprietary estoppel, occupation issues, and possession proceedings.
Experience
Greg’s practice has a focus on rural land disputes and agricultural tenancies (residential tenancies, farm business tenancies and licences) including possession proceedings, rights of way, prescriptive rights, nuisance, adverse possession, and development issues.
Experience
Please note: The experience list above may include examples of work completed prior to joining Keystone Law.
Recognised by The Legal 500 for Property Litigation 2022–2026
Recognised by The Legal 500 for Property Litigation 2016–2020
Member of the Property Litigation Association
Member of the Solicitors Association of Higher Court Advocates
“Greg Barnbrook and Jon Olson-Welsh have provided comprehensive support and advice in negotiating a remediation works contract with the original developer for an in-occupation building”
The Legal 500 2026
“Greg Barnbrook in their property litigation team will always take a pragmatic and considered approach to assisting his clients achieve the results they need.”
The Legal 500 2026
“Greg Barnbrook – a fierce litigator, and always goes the extra mile”
The Legal 500 2026
“Greg Barnbrook has been a trusted and supportive partner throughout, has provided continuity and has been able to draw on the expertise of his colleagues at times when specific additional input was needed from areas other than Property Law.”
The Legal 500 2026
“Greg Barnbrook has been a trusted and supportive partner throughout, has provided continuity and has been able to draw on the expertise of his colleagues at times when specific additional input was needed from areas other than Property Law.”
The Legal 500 2025
“Greg Barnbrook provided consistent and ongoing support in a complex case.”
The Legal 500 2023
“Greg Barnbrook is an excellent solicitor with a commercial mind and a fierce persona in protecting his client’s interests.”
The Legal 500 2023
“Greg Barnbrook was always helpful and would ensure we fully understood our position and options at every stage of the process.”
The Legal 500 2023
“Greg Barnbrook and his colleagues are a pleasure to work with. His ability to clearly articulate the law to his clients is highly valued and we appreciate his counsel. He is always very prompt and professional – we look forward to continuing working with Greg.”
The Legal 500 2022
“Greg Barnbrook’s understanding of the restaurant sectors is second to none and he is particularly commercially-minded when crafting solutions.”
The Legal 500 2019
Greg qualified as a solicitor in 2008. Prior to joining Keystone Law in 2020, he worked at the following firms: