I don't know about the UK but in my country it's not uncommon to have pints priced at 8€, which is 0.5% of the minimal salary. It is a really pricy way to spend time.
€8 (£6.80) is more than most pints even in London, and quite a lot more than the £4.50 I usually pay cos I've been here a while, and know the cheaper places. But even then, £4.50 adds up fast.