In reply to James Malloch: For Edinburgh:
> 1) Is it worth taking a bike for afterwork road rides in either city?
Yes. It's a compact city and easy to get out of, so there are plenty of bike options.
> 2) What are the climbing walls like for bouldering (or routes)?
Alien Rock 2 is a bouldering wall. It's quite good, and I've always enjoyed sessions there.
> 3) Are they easy to get to on a bike or are the roads crap/too busy?
Yes. From Haymarket, you could put together a route that uses the Water of Leith walkway and avoids roads for the most part, although even the main roads from Haymarket to Alien 2 aren't too bad.
> 4) Failing that, what about public transport?
Don't know, sorry
> 5) I'll have a car so are there any bouldering locations that are doable afterwork?
South Quarry of Salisbury Crags is the only obvious nearby location. You're supposed to have a permit, but I'm not sure how rigorously that's enforced.
> 6) Any good restaurants in either place that can be recommended and would come to <£20 per evening?
Excellent burgers at the Cambridge Bar.