This is a top resource for organic beers. It has such a vast range of brews that it would be a pity not to give it a go.

The Pitfield Brewery in London is Britain's only fully organic brewers and is connected to The Beer Shop next door, which claims
the world's largest retail stock of bottled beers. The mail order
service includes top organic beers such as Eco Warrior, a rich,
golden ale brewed to a pilsner recipe, and Black Eagle, a dark brown
ale with an excellent balance of hop and malt flavours. The
business's home brew section offers equipment and organic
ingredients for making your own beers or wines - a fun experiment
for foodies looking for their next culinary challenge.