here in Ireland, micro/local breweries are virtually non existent. there actually is one about 12 miles from me that does lovely beers, but not one pub within 30 miles stocks it! basically, the pubs here do Guinness, Bass or Smithwicks, Harp or Tennants, and usually Carlsberg or Budweiser. that's about it. the only place i can get any faintly unusual beers is, slightly bizarrely, Tesco or Sainsbury. even with such a small variety, most of the pubs do absolutely awful pints. tastes like neat alcohol in dyed water!
whenever i go over to England i always try as many of the local brews as i can. always enjoy that :)