extract all named entity with label from text “”" On 1 September 1973 upon its accession to the EEC, the UK became bound by the ECAA and the Brussels Protocol. Consequently, where a Turkish national sought to reside in the UK to establish him/herself in business or to provide a service, the UK had to apply the domestic business provisions as contained in the Immigration Rules in force in 1973. For after-entry applications, the Statement of Immigration Rules for Control after Entry (23 October 1973) (â€œHC510â€) sets out the substantive framework. “”"