Ok mate where do I start
Hobgoblin
Anything from the Wychwood brewery
Fortyniner
Brakspear double dropped
EPA
Banks Bitter
c*cker Hoop
And while your at it try Crabbies Gingerbeer (not an ale but very nice and not to strong)
When you have tried that lot just work your way through the ale shelf in any good supermarket
Jason