Looking for a english service manual for...

The normal workshop manual source is the Haynes Manual...but unfortunately (as you may already know) they have not produced one yet for this model (According to their website, this is "under consideration"

A recommended source of free information (basically a parts catalogue but not a manual )can be found here

http://www.vagcat.com/epc/cat/au/A80/

Also try looking through here ( put Audi80 in Search box) 

http://www.pdfoo.com/