Staples did carry some low priced / reasonable kit a while back (mine was £19.50 for a three extension tripod reaching 54 inches max height). Don't know if the've still got them. Might be worth looking in Aldi as well the way the have been putting out the offers recently?
You are going to look a bit silly with a massive tripod for a small digital camera...:-)
There are small tripods available (internetcamerasdirect provides one with most of its digital camera sales and may sell them separately) and you can also buy the type that can be clamped to a chair or table.
As for Jessops, its prices are normally on a par or better than most of the competition.