Found these locally, any good?

koop_71

Diamondback DBR

GT Tempest

Chunkers1980

What kind of question is that? It depends on many things.

cooldad

Chained to a pole?

koop_71

http://www.gumtree.com/p/for-sale/mount ... 1119863605

koop_71

http://www.gumtree.com/p/for-sale/dbr-m ... 1117858977

The Rookie

Well the GT is showing as sold, the DBR isn't very good, very poor forks, the seatpost is mounted back to front as well, for gentle offroad use you may as well get something with rigid forks as that one, for proper offroad use much better is available.

robertpb

The DBR is a pub bike, it will get you to the pub and back but that's about it.

In the eighties they used to be called British Gas bikes, because the tubes were so cheap and heavy.