Anyone heard any of the Tannoys Surrey line up?

Hi, has anyone heard of this line of Tannoys? As far as I can tell, they're from the early 80s, and that's it...

There's a pair of Tannoy Bradley's (12" of the line up) on eBay and was wondering whether they're worth pulling the trigger. They have 3128 drivers – are these any good?

Can I assume they weren't as good as the HPDs, since they don't seem to be as popular?

Thanks