^ it depends when you are going kasi during winter time, mas mura but the price doubles or triples during summer which is the peak.
just to give you an idea, we will be in london for 3 weeks this april-may. we got a self catering apartment in the city center in the bloomsbury area near euston tube. a week's rent is GBP700 but the kitchen is fully equipped, there is a washer/dryer and wifi na. you can get cheaper places at GBP400 per week but mas malayo na sa zone 1 or long walk from the tube station.
if you would like to go on overnight trips, a typical b&b would cost GBP60-100 and the more reasonable hotels would be premier inn and holiday inn pero nasa GBP80-150 per night na yan.
for eating out, medyo tipid mode kami ni hubby and we would budget GBP10-15 per person but sometimes we splash out and budget GBP20-25 per person. iba pa yung michelin star restaurant eating.