There are labour shortages across the UK because people are still being told to self-isolate if they have contact with someone who is COVID+

https://www.nhs.uk/conditions/coronavirus-covid-19/self-isol...

Poles are returning back home quicker than than expected post-Brexit because Poland doesn't have a vaccine mandate and was quicker to return to post-virus normal.

Part of the solution to fixing this is abandoning all COVID measures (including masks) and treating the virus just like any other seasonal illness - just as has been done by Norway, Denmark, Sweden etc. recently. People will be more comfortable moving to the UK, and working.