WhatsApp Group Links for SIA Door Supervisors, Security Guards & CCTV Operators Return to WhatsApp Group Categories Click here to add your WhatsApp Group Link to our listings Click here to join: SIA Community Group 1 by SecQ Click here to join: SIA Community Group 2 by SecQ Click here to join: SIA Community Group 3 by SecQ Click here to join: Security Serv Group by Reece Click here to join: Black Blazers Security Group by Zeeshan Click here to join: Corvus Security Events Group by Corvus Security LTD Click here to join: SIA Jobs London Group by Beatrice Click here to join: Birmingham SIA Security Group by Abu Rashid