I just started brewing from a kit (Muntons Gold: Old English Bitter) and I just noticed the kit is a year past its "best before" date; wish I'd noticed before I opened it!
Is this likely to be a real problem? Everything was sealed in tins, it's certainly bubbling away fine, so I guess the yeast was OK. I've smelt and tasted the liquid as it is after 3 days fermenting and it smells slightly sweet (with hints of really nice bitter actually). It certainly has a fairly nice taste and I can't detect any unpleasant or 'musty' flavours. There's only a slightly soapy, bitter aftertaste.
Is this still likely to make a decent beer, or should I consider maybe just bottling up a little of it once it's fermented (just in case) but getting and starting a newer kit instead.