The following test houses are accredited by UKAS (the United Kingdom Accreditation Service) to conduct testing to PAS 24 (Doors and Windows). Alternative accreditation can be demonstrated by appropriately qualified test facilities that are signatories of the EA Multilateral Agreement (EA MLA); such test and certification organisations should take due regard to the UK Police Service Secured by Design Interpretive document for BS EN 1627:2011, BS EN 1628:2011, BSEN1629:2011and BSEN1630:2011 (for products tested and certificated to PAS 24):