- City Electrical Factors - Distributors of Addvent products.
- Heatstore - Distributors of domestic and commercial heating products.
- Firesafe - Distributors of fire alarms and health and safety products.
- Challenger - Distributors of security systems and CCTV products.
- National Home Energy Rating
- Electrical Contractors Association
- Institute of Engineering and Technology, including details of the latest wiring regulations
- Office of the Deputy Prime Minister - Page listing Building Regulations Approved Documents including Part F and Part P