The UK issue ICAO licences, always has done and always will do. An ICAO licence is valid Worldwide and oddly, the only people who seem to have an issue with ICAO licences is EASA who are not a member of ICAO. The EU list of objectives given to EASA by the EC includes: "Assisting member States to comply with ICAO recommemdations" Switzerland and the Channel Islands are not in the EU, they don't seem to have any problems.