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Phil Greenwood


Phil has responsibility for a number of business units across Marlowe Critical Services, serving as CEO.  Responsibility for the water, air and environmental engineering divisions sit within this portfolio.

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Phil has over 20 years’ experience in delivering critical, business to business services. He is passionate about putting the customer at the heart of business strategy by delivering compliance, service improvements and return on investment benefits. Previously, he was General Manager within a specialist services division at TNT before joining Iron Mountain, where he was most recently Country MD and Vice President.

Phil is Passionate about a Team - Customer - Results philosophy and has worked with his Senior Leadership Team to integrate and transform 20 of Marlowe’s acquisitions from standalone entities to leaders in their chosen field. 

Andy Walls

Chief Operating Officer

Andy’s role is to support our colleagues in executing our strategy, integrating acquired companies and continually improving the business.

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Andy has held senior management positions in the Automotive, Insurance, Home Assistance and Stockbroking industries. He led the building of the UK first insurance aggregator from scratch and latterly held Director level positions at multinational and FTSE 250 companies with a strong focus on Operational improvement.

Andy has extensive and wide-ranging change management background and has a strong track record of results delivered in a pragmatic, inclusive and simple way. 

Kirsty Bromley

Finance Director

Kirsty leads the finance team and has driven change in a number of large-scale complex organisations. Driving continuous improvement and business integrations has mainly been gained in the FM sector.

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Kirsty has over 25 years experience as a Chartered Accountant. She has held senior finance positions in multinational and FTSE 250 companies and has gained a wealth of experience in the service sector.

Tim Gaston

Managing Director

Tim leads our WCS Environmental Engineering sector with over 20 years’ experience in water treatment engineering, engineering management and product development. 

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Holding a Degree in Biology and Ecology, Tim started work in the Water Treatment industry as a Sales and Service Engineer. He focuses and specialises in the development of water re-use, recycling equipment and total water lifecycle. Tim has co-authored publications on this subject for the Food and Beverage industry. Tim’s extensive experience in the water treatment sector includes Secondary Disinfection Solutions in Healthcare, Industrial process water solutions, effluent remediation schemes, water purification, recycling and re-use. Tim is a member of IHEEM and the WMSOC.

Jen Jackson

People Director

Jennifer is a commercially minded and culturally focused senior Leader with over 10 years’ experience in designing and implementing people strategies within the specialist engineering services and FM marketplace.

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With a degree in Psychology and a Masters in HR Management, Jennifer is well versed in driving the people agenda, strengthening governance and best practises on a large scale, in extremely complex organisations with extensive experience of integrating businesses with large field-based teams.

Jon Greaves

Managing Director Water and Air

Jon Greaves is Managing Director for the WCS Water and Air Divisions – responsible for our UK and Ireland operations across our core Water and Air service businesses.

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Jon has progressively worked through operational roles, account management, technical management, and senior management roles over the last 16 years within one of the group companies before moving into the role of Water and Air Managing Director.

Jon has experience across multiple sectors of water and air compliance: including district energy networks; data centres; healthcare; food and beverage and facilities management. Jon acted as a corresponding steering committee member on CIBSE CP1 – Heat Networks Code of Practice for the UK released in 2020.


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