Overseas income

There are two trade associations for German tax advisers:

https://www.bstbk.de/de

https://www.dstv.de

Both have listings of all registered tax advisers, and search forms using various criteria (e.g. location, specialty, language skills). The search pages themselves, however, are unfortunately only available in German.

If you are living and working in Germany, you will have to tax both salaries in Germany. How the UK handles this situation (and whether you will be taxed there again) depeds on the rules there - so you may also need a UK tax consultant!

You posted the same content again today in a new thread (which I had to remove, as double-postings are not allowed here). Did you not see, or not like my reply above?

@beppi I did not sed your message until now.  I posted agskn as I didn’t see a response previously.