In case you missed it, on 30 November, the Department for Transport (DfT) announced that
Millions of passengers will be able to enjoy the same access to transatlantic routes once the UK leaves the EU. ..... the UK has reached a new air services arrangement with Canada which will see flights continue between the 2 nations post Brexit.
The deal ensures that planes flying from the UK will continue to enjoy the same access they currently have with Canada, helping the UK maintain its place as Europe’s most important aviation hub.
https://www.gov.uk/government/news/t...ir-arrangement
It follows a similar announcement two days earlier about an ‘open skies’ air services arrangement with the USA and nine other countries.
https://www.gov.uk/government/news/u...s-arrangements
Presumably that will all depend on there being enough crew with the appropriate licenses to fly these routes, and enough aeroplanes with appropriate certification.
airsound