Welcome to the forum! Having 1000 GBP a month to save is a great start, since you can make real progress relatively quickly.
I think the first thing to do is think about what you want to do with the money you'll save, or your life. Do you want to buy a house? Retire early? Travel extensively? Give to charity? Further your education? Knowing what you're saving your money for goes a long way towards helping you develop a sound and realistic plan, and it also serves as a powerful motivator to keep saving. Meeting goals you've set feels wonderful.
To begin with, I agree with Coach and Midpack -- building up an emergency fund equal to oh, say 6 months expenses (more if you're married with a family and the main breadwinner) in a liquid and safe account is a good start. While you're doing this, you can start reading books -- there's a recommended reading list discussion on this forum here
. I assume that many of these books would be available in the UK.
Personally, I found Common Sense on Mutual Fund investing, by John Bogle (who founded the Vanguard Group) to be by far the best volume I've read on the subject. It's the book I wish I had read when were were just starting out (all of 8 years ago). Well done and very easy to understand, but not for lack of validity or detail.
Good luck and have fun!