Croma Security Solutions Group PLC (CSS Group PLC or Croma Security) ( previously Access Lock and Key ) is a holding company for a group of four security companies. It is publicly traded on the London Stock Exchange Group AIM market and is based in the Solent Business Park, Whiteley, Hampshire. It has further offices in London, Dumfries, and Abu Dhabi, with Locksmith outlets along the South Coast. The group is involved in many aspects of security from guarding to locksmithing and many types of electronic security.
The group currently employs (through its subsidiaries) over 500 people, with a mixture of skill-sets including security officers and engineers. Its operations span most of the UK (with some work in the Middle East)and has a diverse client base from domestic customers to FTSE 100 companies and other 'Blue Chip' organisations. The present structure was formed by the "reverse acquisition" of the Southampton-based CSS Group of companies by Dumfries based Croma Group PLC.