Hi - having asked for recommendations about a good reliable Roofer, I just wanted to post my feedback.
After calling 7 or 8 companies I managed to get range of quotes from £450 to £800 to replace guttering, repoint a chimney stack and refix some slate tiles.
In the end I chose to use J & C Roofing Services (07706 734797) as recommended on here by Charlotte Fisher Was McCarthy, and I am pleased to say I would recommend Jason to anyone else who's looking for these sorts of services. He arrived to quote on the job when he said he would, he sent the quote through quickly, did the job just as had been asked of him and above all was excellant value.
As and when I need other work doing on my house, I will definately use this site as a first call for recommendations.