SIA Approved Contractor ISO 9001 Accredited CHAS Certified SSIP Certified About Us StrongGuard Security UK LTD - SIA Approved Contractor We are a national security services and solutions provider to the private, commercial, industrial and public sectors. Our knowledge and experience of the security industry, together with our personal approach to customer relations, means that we offer an incomparable quality of service to our ever expending portfolio of clients. Trading Since 2011