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Guy Grantham | Colliers | 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

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 & Economics

Property Types


Expert/Featured Research

20 Jul 2021

London Offices Snapshot July 2021

Transactional activity is on the rise once more towards the long term average with key London occupiers starting to reposition themselves within the London market and committing to new HQs
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28 May 2021

Occupier Insights London Offices Market Update May 2021

The London fit out market has been on a roller coaster ride during the last year, and despite some positivity making its way into business sentiment, the ride is not yet over.
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12 May 2021

South East Offices Snapshot Q1 2021

South East demand showed a sharp bounce back in Q1 2021, despite the national lockdown remaining in place for the bulk of the quarter.
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Expert/Featured News

13 May 2021

Q1 bounce back for South East UK office market  

The South East office market saw an impressive bounce back during the first quarter of the year, according to commercial property specialist Colliers.
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4 May 2021

Best in class space and flexible terms will be dominant theme for the West End office market

It is no secret that London’s vacancy rates have risen throughout the pandemic, and levels in the West End are now at 6.9 per cent compared to 4 per cent in Q1 2020.
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