CW247
Actually, wet leasing is not in any way restricted by the UK leaving the EU, the TCA makes sure of that, at least for UK companies. The other way round is only available in exceptional circumstances. The UK CAA might take issue with the ryanair approach of having just one UK registered aircraft on the UK AOC and leasing in all the rest, but in less extreme cases there is absolutely no restriction at all. Even less so if they simply fire their UK based personnel for EU-UK flights and do those flights from the other end with their EU AOCs, an approach that is not limited to this special case but can be applied quite widely elsewhere as well. IIRC ryanair used that for a while with their french bases, easyjet is now doing that with their german base etc.