CAA is no longer issue new National BCAR Section L licences, except for those aircraft listed within Annex II. ( old aircraft etc)
http://www.caa.co.uk/docs/177/8355%20Section%20I_07.pdf
Section 1-11, General Information.
So, you could have BCAR for Annex II and EASA AMEL for Airbus/Boeing with the new 7 digit reference.