Never really been a beer drinker, would have the occasional whisky or cocktail, but after a trip to Belgium earlier this year, i am a convert!
These can be bought from uk supermarkets:
Triple Karmerleit
Delirium
Hoegarden
St Bernardus
I used a website called the belgianbeercompany to order a selection of tried beers, and new ones i wanted to try.
Golden draak (also great in a steak pie)
Gouden carolus - classic / triple / whisky infused
kwak
straffe hendrick
Kasteel donker
Kasteel Barista Chocolate quad
Rochefort triple
Also, one that i bought back from Belgium and havent been able to buy online yet, is one from the Brussels beer project called Tripel bertha.
If you are near to Bristol, there is an excellent Belgian pub called The Strawberry Thief that serve Belgian beers.