Guy Grantham | Colliers International | London - West End

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

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 & Forecasting
Property Type
Featured Research
30 Oct 2020
South East Offices Snapshot Q3 2020
Whilst South East take-up in Q3 was 37% down on the quarterly average, unlike Q2 there was no single large deal to dramatically skew the figures.
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22 Oct 2020
London Snapshot Q3 2020
Vacancy is starting to rise across the wider London market as the slowdown in deals execution begins to impact upon absorption. London wide vacancy is now up to 6% in Q3 but still below the long term (20 yrs) average
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1 Oct 2020
Occupier Insights London Offices Market Update October 2020
In this report we also look at how leasing activity has been affected over the last six months, and how this is in turn is impacting on fit-out costs and tender price inflation.
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Featured News
3 Nov 2020
Positive movement in both leasing and investment for South East office market in Q3
In Q3, the South East office market saw over twice the number of leasing deals completed (42) than in the previous quarter (18) as take up reached 449,117 sq ft across the region.
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22 Sep 2020
SMEs dominate the City of London as half of office stock is leased by firms occupying 50,000 sq ft or less
New research from Colliers International shows that despite headlines concentrating on financial and legal sectors, the City of London has an occupational diversity that will provide resilience and help drive recovery from the COVID-19 pandemic.
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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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