This may not be of much help to Kekec1965 at this point (considering this thread started over a year ago and the frame is probably long gone by now), so this is going to be just for reference.

I think this frame was most likely originally badged as Barry Hoban (British Eagle). They had two nicer models - Campanissimo (Reynolds 531/501) and Primavera (Tange 1). Aside from the tubing, the two models also used different seat stay caps, dropouts and fork crowns. The mystery frame here is definitely a Primavera.

There were some slight differences between Primaveras (like the choice of lugs (two Prugnat styles) and number of water bottle bosses) but I'm not sure those were changes from year to year or was the result of a 'use what's available at the time' type of approach.


Ad (late 1986) showing the two models:




Tange TR dropouts and the same stay end treatment were used on Primaveras:




Head lugs, fork crown:



This one shows the seat stay caps and brake bridge (this frame is definitely repainted and the fork might be a replacement, too):





A couple more. I'm still not sure if that red fork was a later respray or not: