Summary from 1 Jan 2021
We should see no difference when buying from EU VAT registered retailers e.g. Thomann
But private purchases from EU will require a Customs declaration (and handling charges) plus VAT of 20% i.e. the same as when buying from US or Jersey / Guernsey
To prevent any of us UK based BC'ers coming in for a nasty surprise in 5 days' time:
Prepare to import goods from the EU to Great Britain from 1 January 2021 - GOV.UK (www.gov.uk):
"From 1 Januar