| PJC Consultancy | Environmental Consultants | Chapters House,, Priesthawes farm Polegate East Sussex BN26 6QU, Polegate, Polegate | 
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| Windrush Ecology | Environmental Consultants | Howbery Park Wallingford Oxfordshire OX10 8BA, Wallingford, Wallingford | 
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| Proudly Carbon Neutral | Environmental Consultants | Hamilton House, Mabledon Place London WC1H 9BB, London | 
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| Middlemarch Environmental Ltd | Environmental Consultants | Triumph House, Birmingham Road Coventry West Midlands CV5 9AZ, Coventry, Coventry | 
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| Terrafiniti | Environmental Consultants | Guildford Institute, Ward Street Guildford Surrey GU1 4LH, Guildford, Guildford | 
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| Acoura | Environmental Consultants | Perry Scott Nash House, Primett Road Stevenage Hertfordshire SG1, Stevenage, Stevenage | 
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| Greenspace Ecological Solutions (GES) | Environmental Consultants | Suite D, Priory Park, Blackham Court, Beech Green Lane Hartfield, Hartfield, Hartfield | 
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| Environmental Monitoring Solutions | Environmental Consultants | Savile Street East Sheffield South Yorkshire S4 7UQ, Sheffield, Sheffield | 
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| REC Ltd | Environmental Consultants | Osprey House, Pacific Quay, Broadway Salford Lancashire M50 2UE, Salford, Salford | 
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