I live and work in Bristol in the UK, would really recommend it. Such a vibrant tech scene here plus lots of established companies as well as newer larger ones opening offices (JustEat for example).

The city itself has a-lot going on (not all tech focused too) and is surrounded by countryside. Loads of nearby places to visit too such as Bath or Frome

Also has great transport links to the rest of the UK plus has its own airport

Some tech focused events/groups - Bristol JS -> www.meetup.com/BristolJS/ - techspark -> techspark.co