Security Lock Safe Company LTD was still a new safe manufacturer when it was bought by The Wormald group in 1972. SLS became a leader in safe brands within a few short years.
In 1984, SMP Security Ltd wanted to expand into manufacture and purchased SLS from the Wormald group. Manufacture of SLS safes continued into the 1990's but was reduced and mainly focussed on the Far East.
The SLS Security website was launched in 2012 as an eccomerce site selling the SMP brand of safes and safe spares. It also became a point of contact for owners of SLS safes requiring repair or service.
In 2013, Associated Security Solutions purchased SMP Security with plans to increase production of British made safes and re-launch the 'SLS Safes' brand.
In 2016, the brand new SLS website was launched providing an attractive yet user friendly site to showcase the products and services on offer.