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Guy Grantham | Colliers | London - West End

Guy Grantham

B.A. (Hons)

Director of Research and Forecasting

Research and Forecasting

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Professional Summary

Guy has been a property research professional for 23 years and gained extensive knowledge of the UK and Global property markets. He has worked closely with a wide variety of major developers, landlords and occupiers in a consultancy capacity. Instrumental in supporting Hines' purchase of Brindleyplace for £200m, on which Colliers advised. He is now specialising in the London Office market using his extensive knowledge and experience to provide market leading insight into current occupier, investment and development trends.


Guy has pioneered UK research on Net Stock Absorption of office space in Central London, Birmingham, Leeds, Glasgow, Manchester and key Thames Valley towns. This has been universally well received across the UK and US property sectors, providing a unique insight into the health and workings of the key commercial real estate markets in the UK. Guy also produced an award winning report on the Media and Technology sector in London which was widely covered in the press and extremely well received by clients.


BA Hons Oxon

Memberships & Involvements

Society of Property Researchers


Hines, Prologis, Wells Fargo, St Modwen, GPE, PA Consulting, LinkedIn, Aviva, Axa Real Estate, NBC Universal


“Colliers Internationals' Birmingham office and investment teams work in partnership to identify, appraise and deliver real opportunities. This, coupled with their in depth market knowledge, which is supported by their research team, separates them from their competitors.”

Anthony Leonard, Hines UK


“This type of work is very valuable for us. Great stuff.”

Stuart Martin, Senior Portfolio Manager, Global Property Securities, First State Investments


‘I’m very impressed with the Media and Technology Monitor which I’ve found very insightful.’

Andy Armstrong (SWIP)


'Guy's research enabled us to make a well informed decision on matters critical to the company’s continued development'

Chris Storr, Group Finance Director, LA Fitness


'A thorough examination of the key issues providing a high level of detail and an innovative approach'

Frances Osborne Director, Fund Management Institutional Funds, PRUPIM























Service Lines

Research & Economics

Property Type


Featured Research

19 Nov 2021

South East Offices Snapshot Q3 2021

The South East office market has experienced the most comprehensive improvement in demand since the pandemic began.
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4 Nov 2021

Bristol Offices Snapshot Q3 2021

There has been a significant improvement in city centre take up compared with the same period of 2020.
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25 Oct 2021

London Offices Snapshot October 2021

Demand for office space across London, while continuing to improve, remains skewed towards better quality space
Read More
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Featured News

11 Oct 2021

London office take up reaches over 2.5 million sq ft in Q3

Take up of London office space hit 2,564,000 sq ft across the capital in Q3 according to new data from Colliers.
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9 Aug 2021

10% of London’s office stock may become unusable in 2023

Low EPC ratings of F or G make space potentially unusable when new MEES regulations come into effect.
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