Cumbria and the Lake District have a wealth of good breweries. Here are some favourites. If I have missed some, tell me and I will add them!
Barngates Brewery: http://barngatesbrewery.co.uk/
Coniston Brewing Company, Coniston: http://www.conistonbrewery.com/
Cumbrian Legendary Ales (including Loweswater Gold): http://www.cumbrianlegendaryales.com/
Ennerdale Brewery: http://www.ennerdalebrewery.co.uk/
Hawkshead Brewery, Staveley: http://www.hawksheadbrewery.co.uk/
Jennings Brewery, Cockermouth: http://www.jenningsbrewery.co.uk
Keswick Brewing Company: http://www.keswickbrewery.co.uk/
The Lakes Distillery: http://www.lakesdistillery.com/