They actually have a few beers on tap outside. Bass Ale - yum!
If you have non-beer drinkers in your party I highly recommend the Welsh Dragon. You can get it to go and it comes in a nice *Rose and Crown* souvenir cup.
ETA Recipe from AllEars for the Welsh Dragon:
3/4 ounce peach schnapps
3/4 ounce melon liqueur
1/2 ounce green crème de menthe
to taste orange juice
to taste pineapple juice