The British Government announced that it might introduce a temporary permissions regime for inbound passporting EEA firms and funds.
If there is not an implementation period and the passporting regime falls away when the UK leaves the EU, the temporary permissions regime will provide a backstop to ensure firms and funds can continue their business with minimal disruption.
It will allow inbound firms to continue operating in the UK within the scope of their current permissions for a limited period after exit day, while seeking full UK authorisation. It will also allow funds with a passport to continue temporarily marketing in the UK.
Vide the Announcement of the FCA