Putting some money aside for a rainy day; even if this is just a few pounds; is always a good idea.
Visit the Money Advice Service for some ideas.
Why not take a look at your local Credit Union, they offer a place to save and a low cost loan:
Wyvern Savings and Loans or Somerset Savings and Loans
Bridgwater & Taunton
Bridgwater and District Credit Union or Somerset Savings and Loans
Plough and Share Credit Union
Wyvern Savings and Loans