In the UK, DORMA Glass was introduced in 1986; DORMA Entrance Systems Ltd was established in 1991, to focus on the automatic door sector; and within 12 months a sister company, Access Control & Maintenance Engineering Ltd, was founded to deal with the service and maintenance of their automatic door installations. DORMA subsequently acquired another four service companies (Permclose Door Services Ltd, Door and Window Services Ltd, Dor-Tech Nationwide Ltd, Specialized Door and Window Services Ltd) allowing them to increase the range of services to cover manual and industrial doors. In July 2003 the seven individual companies amalgamated as DORMA UK Limited.