@mattbrowne That varies…. if you can get a bed for 2 people for £30 a night (in one room), you’re doing really really well, but it probably won’t include breakfast. £40 a night for 2 people, including breakfast, is probably as low as you’ll find in a b&b. For somewhere luxurious rather than functional, you’d be looking at £60 a night upwards.
But then, you’re looking in the South…. If you’re going to a popular holiday destination, such as Cornwall, during the school holiday here (first 2 weeks of April) then £60 may well only get you a basic b&b, and luxury may come in at over 3 figures. I definitely recommend late rooms for getting more for your money.
Cheaper alternatives are to look at the www.yha.org.uk, and youth hostelling can be a lot posher these days than the good old functional days, with private rooms and own bathrooms etc.