| raes.org.uk | Royal Aeronautical Society (RAeS) |
| iosh.co.uk | The Institution of Occupational Safety and Health (IOSH) |
| ile.co.uk | Institute of Lighting Engineers (ILE), UK |
| energyinst.org.uk | Energy Institute |
| cibse.org | Chartered Institution of Building Services Engineers (CIBSE) |
| bohs.org | British Institute of Occupational Hygienists |
| nsca.org.uk | National Society for Clean Air and Environmental Protection |
| iiav.org | International Institute Of Acoustics And Vibration |
| iop.org | Institute of Physics (IOP) |
| iee.org.uk | Institution of Electrical Engineers |
United Kingdom , ,