The UK's Multi Trade Body for Security

Professional Body that listens, understands and acts for its members.
Welcome to Security Industry Union Ltd, the UK's Multi Trade Body for Security.

SIU is a membership-based organisation that represents security professionals, protects their rights at work, and provides advice, support, representation, and a bespoke group of member benefits that aren't available to the general public. We are incredibly proud of protecting the protectors who are working relentlessly in the backbone of the United Kingdom's infrastructure and around the Globe.

Pre-2009, the security workers did not have the dedicated support and services they deserved, and we decided to change that for good. SIU was founded in 2009, and we are now celebrating its 12th anniversary. Being a privately funded organization, SIU could attract private security and public sector personnel at the first onset when it started its operations. We ensured our member benefits were versatile and relevant to all our membership base and continuously reviewed and enhanced. SIU is independent and free to pursue the best opportunities for its members.





SIU Offer




Find out more about SIU member benefits by clicking here.