There are plenty of great beers down in this neck of the woods beyond the average stuff that gets churned out by Skinners and Sharps etc but it can be pretty difficult to get your hands on. Too many of the local pubs stick with Doombar, Butcombe, Gem etc when there's a multitude of great beer in the area which is a great shame.
Cotleigh, Cheddar Ales, Exmoor Ales, Yeovil Ales, Glastonbury Ales, Forge (had a few too many from them at a beer festival in Ilfracombe and they were beautiful) are all fantastic from the south Somerset/Devon area.
Bristol is going absolutely bonkers for real ale at the moment and there are places opening up relentlessly. Bristol Beer Factory, Wiper and True and Arbor Ales are all wonderful, wonderful breweries who have a big presence in the city now. I'd recommend keeping an eye out for them if you can. Wiper and True are particularly good!