The UK has left the EU
The United Kingdom officially left the EU on 31 January 2020. Swiss–UK relations remain unchanged for the time being. This is because there is a transition period until at least the end of 2020, during which the bilateral agreements between Switzerland and the EU continue to apply to Swiss–UK relations. Switzerland has already laid the basis for Swiss–UK relations after the transition period, however.

Transition period until (at least) the end of 2020
Switzerland enjoys close relations with the UK. Currently those relations are regulated primarily by the bilateral agreements that Switzerland has concluded with the EU. There will be no changes for the time being to Swiss–UK relations as a result of the UK's withdrawal from the EU. This is because there is a transition period until 31 December 2020, which could be extended by a maximum of two years. During the transition period, the bilateral agreements between Switzerland and the EU continue to apply to Swiss–UK relations.
However, Switzerland also prepared the ground early on for its future relationship with the UK. As part of the Federal Council's Mind the Gap strategy – named after the famous announcements on the London underground – an interdepartmental steering group led by the FDFA has prepared several bilateral agreements with the UK. Agreements in the areas of trade, overland transport, air transport, insurance and citizens' rights have now been signed and will come into effect at the end of the transition period. The transition period gives Switzerland the opportunity to add to or update these alternative arrangements.
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General Secretariat GS-FDFA
Federal Palace West
3003 Bern