- HVCA (Heating and Ventilating Contractors Association)
Membership number: F005200 / HV0167 
- BSRIA (Building Services Research and Information Association)
Membership number: CN482A 
- ECIA (Engineering Construction Industry Association)
Membership number: M115/92880
- ECA (Electrical Contractors Association)
Membership number: 240199, Technical Assessment Certificate: 31 October 2004 
- JIB (Joint Industry Board for the Electrical Contracting Industry) Membership number: J1375820
- APHC (Association of Plumbing and Heating Contractors)
Membership number: 308 3152006
- SELECT (Electrical Contractors Association of Scotland)
Membership number: 8005 
- CIBSE Patrons Group (Chartered Institution of Building Services Engineers)
- RoSPA (Royal Society for the Prevention of Accidents)
Membership number: M40900100
- CHSG (Construction Health & Safety Group)
Membership number: MEM/H03