Interesting, Deutsche Post wouldn't accept it without 12% import being paid. I guess there is still an amount of confusion and until it settles down I just can't justify the time dealing with the UK I know a lot of EU company's are doing the same, it shouldn't cost us time which is ultimately money, to deal with another country taxes.
You should not have been paying VAT the UK was included in the EU VAT Regime the UK like the EU only paid VAT on items from non EU states, Andorra, Switzerland, the Channel Islands, Norway, America etc.