Valuations

  • Nick Mann

    Associate Director Nick Mann is an Associate Director and MRICS qualified Registered Valuer with wide-ranging experience delivering RICS Red Book compliant valuation advice across commercial, residential, development and mixed use assets. With a background spanning both secured lending and private valuations, he works as part of a regional team covering predominantly the south coast area,…

  • Michelle Cheung

    Associate Director Michelle has been a Chartered Surveyor since 2019 and joined Aitchison Raffety in 2025, she came to the business through Graham + Sibbald’s acquisition of Aitchison Raffety. She holds a bachelor’s degree in Accountancy and later transitioned into a career in surveying. Prior to joining Aitchison Raffety, Michelle provided real estate valuation advice…

  • Nicole Tucker

    Senior Surveyor Nicole joined Aitchison Raffety in 2002 and came to the business through Graham + Sibbald’s acquisition of Aitchison Raffety. She is a surveyor within the valuation team, responsible for undertaking valuations on commercial and residential properties. Nicole undertakes a range of valuations for a variety of purposes including secured lending, portfolio, private and…

  • Max Buckland

    Senior Surveyor Max joined Aitchison Raffety in February 2023 after graduating from the University of Reading with a BSc in Real Estate. He came to the business through Graham + Sibbald’s acquisition of Aitchison Raffety. Initially qualifying in the Valuation division, he specialised in secured lending for commercial property assets. Max has since transitioned to…

  • Laura Macqueen

    Senior Director Laura came to the business through Graham + Sibbald’s acquisition of Aitchison Raffety. Laura is a Senior Director in the South, for the Valuation division at Graham + Sibbald, preparing residential valuations for solicitors, banks and financial organisations. Laura covers a wide area that includes Hertfordshire, Buckinghamshire, Bedfordshire, Oxfordshire, Essex and London. Laura…

  • Karen St Helen

    Associate Director Karen has over 25 years in the property business including Landlord and Tenant work but predominantly valuations for secured lending. Karen has undertaken a variety of secured lending work covering, London, Essex, parts of Berkshire, Hertfordshire, Kent and Suffolk. She has obtained a good level of knowledge across property sectors such as residential,…

  • Kirsty Brummell

    Lead Administration Coordinator Kirsty joined Graham + Sibbald following the acquisition of Aitchison Raffety in 2025, she has been at Aitchison Raffety since 2022 in an admin role. She progressed into a valuations role, before getting promoted to lead administrator. Kirsty is the point of contact for any and all admin needs, and prides herself…

  • Karen Maley

    Client Services Administrator Karen came to the business through Graham + Sibbald’s acquisition of Aitchison Raffety. She joined Aitchison Raffety in August 2009 at the Milton Keynes branch as a secretary and currently works as a Client Services Administrator for the Valuations Team being a home based worker. Karen has previously worked for other companies…

  • Ian Wimpenny

    Managing Director Ian joined Graham + Sibbald following the acquisition of Aitchison Raffety in 2025. Ian joined Aitchison Raffety in 2021 and was appointed Managing Director in 2024. With over 20 years’ of experience in the real estate valuation industry, Ian was responsible for the business’ valuation service line. Ian is a Chartered Surveyor and…