I'm fussy so it really depends what's in the fridge or what's on offer at the bar....
@Glaucus I agree about 'Crabbies is to sweet' so I'm waiting on pieplough reporting back about the Williams Brothers version, keep an eye out mate
Edit: This one
Just discovered a William Bros pub in Glasgow but didn't notice this on Friday. I'll have a look for it at the weekend, they must stock it, they have an incredibly wide selection on offer.
Maybe something like a Weihenstephaner Hefeweissbier for a summer's day drink.