In reply to DaveH70: If you really want to improve your outdoor climbing then get instruction/coaching outdoors.
By all means get some advice about climbing movement indoors, but quite frankly it won't transfer that well to climbing outdoors. Better and more efficient climbing technique helps in the longer-term but I know very few climbers who are ultimately held back by that aspect of their climbing on trad routes.
You don't say where in the UK you are. If you are in the SW feel free to email directly me if you want some advice.
I personally know dozens of other instructors and coaches; the following are all recommended based on a good knowledge of their experience and ability:
If you're around London, both then probably the best coach in the UK is Neil Gresham
http://www.climbingmasterclass.com/ who is often based at the Westway. Adrain Berry
http://positiveclimbing.com/ is also good and works with the Castle and the Arch as well as running courses in the Peak.
If you are close to Gloucestershire, it might be worth emailing Paul Smith
http://www.rockandwateradventures.co.uk/ as he's as good a coach as anyone else I know.
If you a reasonable distance from North Wales, then Mark Reeves would be a superb bet
http://lifeinthevertical.co.uk/blogs/climbingcoach/
In the Peak you are spoiled for choice but out of the recommendations already mentioned, I think a great option would be
http://www.peakmountaintraining.co.uk/ (James Thacker, Dave Hollinger, Neil Johnson & Ruth Taylor). Also, Lucy Creamer
http://www.lucycreamer.com/ and Guy Wilson
http://www.pureoutdoor.co.uk/ are both great to go climbing with
Unfortunately when it comes to NE/Lakes/Scotland etc. I can't give any personal recommendations but there will be plenty of options out there.