Rapha, nice but a bit pricey?

Ta, will have a look at them. Not much fun when your socks and pants are wetter than your towel at the start of the day.

if you don't want to spend for a waterproof bag get a dry bag or something similar to put in your existing one. Lomo 35L diving drybags are £6.50 each!

http://www.ewetsuits.com/acatalog/Dry-Boxes-dry-bags-uk.html