Re:
Right guys, I've been able to get to the bike quickly and check a few things, on the fork it indeed says tange, made in Japan 3C. Also frame with some bite (FD rear brake and bit of BB still attached it weighs in at just under 3kg.seat post is labelled as 26.0 and as far as the external diameter I can measure it at about 33mm.
For your info brakes are shimano tourney and the cranks sungio.