Alex Warburton
Associate Biography Coming Soon!
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Mark Cooke
Director Mark joined Graham + Sibbald in 2026 as a Director of Office Agency working out of our Manchester office, having joined from Avison Young where he worked for 11 years. Mark achieved his BSc Hons in Urban Land Economic at Sheffield Hallam University and became a full RICS chartered member in 2005. He has…
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Angela Pryde
Client Services Executive Angela joined Graham + Sibbald on 18 May 2026 and is part of the Valuation Team, working within the Quotes division. Based in the Manchester office, Angela works closely with colleagues across London and Birmingham. Prior to joining Graham + Sibbald, Angela gained valuable experience working in Section 75 claims, supporting major…
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Lauren Walker
Surveyor Lauren Walker is a Surveyor within the Healthcare team, based in the Manchester office. She joined the business in May 2026 and brings a strong academic foundation, holding an undergraduate degree in Law and a Master’s degree in Real Estate. In her role, Lauren undertakes a broad range of professional instructions across the healthcare…
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Stephen Wardle
Senior Architectural Technologist Stephen joined Graham + Sibbald in May 2026, working in the Manchester Office as a Senior Architectural Technologist. He has over 24 years industry experience in architectural practice starting his career through an apprenticeship at the age of 16. Gaining a 2:1 in his BSc(Hons) degree in Architectural Technology at The University…
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Rachael Witt
Surveyor Rachael is a Valuation Surveyor in the Valuations department. She is MRICS qualified, a RICS Registered Valuer, and she holds a BSc (Hons) in Real Estate Management. Based in Manchester, she covers Hull, the East Riding of Yorkshire, and North and North East Lincolnshire. Since joining G+S in April 2026, she has undertaken secured…
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Tom Beckett
Senior Surveyor Tom is part of the Valuation team at Graham + Sibbald, responsible for undertaking a wide range of valuations for secured lending and accounts purposes. He provides ‘Red Book’ valuations across all principal commercial property types, including sites being redeveloped for both commercial and residential use. Tom also works on bespoke valuation projects…
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Yvonne Clempson
Research Assistant Yvonne came to the business through Graham + Sibbald’s acquisition of Aitchison Raffety. She joined Aitchison Rafferty in 2019 and works within the Business Rates Team. Her role involves researching property occupiers and key contacts across England and Wales, supporting colleagues in identifying opportunities to help businesses reduce their business rates liabilities. She…
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Stuart Hesketh
Client Relationship Director Stuart has over forty years of experience in various aspects of marketing and client relationship roles, with the last 26 years focused specifically on the commercial property market. He joined AR in December 2003, he came to the business through Graham + Sibbald’s acquisition of Aitchison Raffety. Stuart has since played a…
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Paddy Waldron
Senior Surveyor Paddy is from and based in Manchester. He joined the business through Graham + Sibbald’s acquisition of Aitchison Raffety, having originally joined Aitchison Raffety in September 2025. He holds a BSc (Hons) degree in Building Surveying whilst studying and living in Leeds, but has specialised in business rates since 2021. Paddy has experience…
