Door Superviser Here is a list of Door Superviser trainers. Blayed Facilities Personnel http://www.blayde.co.uk/index.html Sierra Training http://www.sierra-training.org/ Security Standards Soultions  http://www.secssol.co.uk/ A2Z Security Training Ltd  http://www.a2zsecuritytraining.com/ The Protector Group Limited  http://www.tpgtraining.co.uk/