Guy Grantham

Guy Grantham

B.A. (Hons)

Director of 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

Membership 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 & Forecasting
Property Types
Featured Research
9 Apr 2020
London Sentiment Update 2020
While going into 2020, London looked set to benefit from the improved economic and political outlook following the decisive election result.
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11 Feb 2020
London Office Supply Overview
London office supply is the talk of town at present. Regardless of the wider political climate, occupiers have continued to absorb space at a considerable rate.
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10 Apr 2019
A New Lease of Life April 2019
London office market average lease lengths have been reducing steadily over the last two decades.
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Featured News
4 Mar 2020
70 per cent of West End space under construction has already been pre-let – Colliers International
Lack of stock means London occupiers having to look up to four years in advance for new space.
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21 May 2019
London has just 2.5 months of new office stock left
Capital’s development pipeline reaches 20-year record low
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3 Jan 2018
Sector specific UK property predictions from Colliers International
Sector specific UK property predictions from Colliers International
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