Bristol

  • Stacey Matavesi

    Director Stacey joined Graham + Sibbald following the acquisition of Aitchison Raffety in 2025. She started at Aitchison Raffety in 2024 as an Associate Director in our Business Rates team. She is experienced in the rating valuation of all bulk classes including warehouses, offices, and retail. She also has experience with specialist classes including healthcare…

  • Ophelia Avent

    Associate Director Ophelia is an Associate Director working out of the Bristol area who joined our valuation team in January 2023. Previously, Ophelia worked for the Valuation Office Agency where she undertook a range of Red Book valuations for public sector clients. She earned her qualifications and became a Chartered Surveyor Member and RICS Registered…

  • Max Williamson

    Associate Director Max joined AR in May 2025 and has over 10 years’ experience in commercial property advisory; having previously worked for Lambert Smith Hampton and the Valuation Office. He came to the business through Graham + Sibbald’s acquisition of Aitchison Raffety. He has vast experience in bulk class advisory of warehouses, offices and retail;…

  • Joe McCarthy

    Executive Director Joe has over 12 years’ experience in business rates and heads the England and Wales business rates team, whilst maintaining an active caseload across a wide range of rating matters. Joe specialises in the central London office and retail markets, having advised occupiers and investors on all aspects of rating liability, appeals, and…

  • Dom Rosenbaum

    Senior Director Dom joined Graham + Sibbald following the acquisition of Aitchison Raffety in 2025. He started in Aitchison Raffety’s Healthcare team in December 2021 serving clients across the South West and South of the Country. He brings with him 15 years’ post qualification experience having worked across a broad range of property sectors and…

  • Billy Overton

    Associate Billy is an Associate Chartered Building Surveyor within our Bristol office, having joined Graham + Sibbald in December 2022. Billy provides a wide range of Building Surveying services to our commercial Clients, including; Schedules of Dilapidations Project Management, Principal Designer and Contract Administration Services Pre-acquisition Surveys Reinstatement Cost Assessments Planned Maintenance Programmes Commercial Energy…

  • Murray Walker

    Director Murray has over 30 years’ experience and specialises in asset and property management advising real estate funds, property companies, and corporate occupiers throughout the UK. Murray joined Graham + Sibbald with the acquisition of Keningtons in 2022, having begun his career in the City of London after graduating from Reading University with a BSc…