Lindisfarne mead is very nice and you can get it in odd places around Britain. I think it's a tad over priced though and as I prefer my mead to be less sweet (I know it's made from honey but it can vary wildly in how sweet you can make it) I tend to drink other makes. My favourite is Ty Brethyn meadery's lemon mead. Very dry and wonderfully light.

I once met an avid amateur brewer who made a fantastic straight mead and also an incredible blackcurrant mead. It's a shame he lived in deepest Cornwall (I'm based in London). But it's amazing how many places make mead now. Over the last 15 years it's steadily been making more appearences, especially from places that already brew other beverages like wine and cider. It's lovely to go round trying them all!