- Alandale Construction Ltd
- Allan Roofing & Fenestration Ltd
- Anchor Trust
- Anderson Waterproofing
- Arsenal Football Club
- Ballast PLC
- Balfour Beatty Construction Ltd
- Billfinger & Berger Ltd
- Bovis Lend Lease
- Bowmer & Kirkland
- B.N.F.L Magnox Generation
- Briggs Roofing & Cladding
- Charles Church Development Ltd
- Coverite Ltd
- Dalkia Workplace Services
- Delomac Roofing
- Galliford Hodgson
- Hunts Roofing
- Jackson Building Ltd
- Johnson Controls
|
- JJB Stadium
- Keith Lodge Industrial
Roofing Ltd
- Landers & Associates
- Land Securities Properties
Ltd
- Langley Waterproofing
System Ltd
- Legal & General
- Letchworth Roofing Company
Ltd
- Liverpool Airport
- Marley Waterproofing
- Middlesex University
- National Exhibition Centre
(N.E.C)
- Newcastle Airport
- Norwest Holst
- The Office of National
Statistics (O.N.S)
- Toy's 'R' Us
- W.K Cox Ltd
- Waitrose Supermarket
- Watts & Partners
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