On a complete tangent, the rear triangle on this being bolted reminded me of an old Ritchey mtb frame (I think, possibly Bontrager?) that used to have a aluminium / steel front /rear triangles and was joined by bolts (which I think eventually broke, I'm not suggesting that this English will suffer from this!).
This was probably 20+ years ago - they got very good reviews but I can't find any mention of them anywhere. Anyone remember anything about the bike I'm thinking of?
Sure you're not thinking of the fisher CR7?