I really hate to tell you mate but that belt is a waste of money. Sorry, I know that's a little rude but I'm just trying to help. I've been doing a lot of research into belts because I'm getting one specifically for powerlifting and I want it to last a while and strength shop uk belts really aren't the way forwards. I doubt you want to spend loads of money but just as a reference:
http://www.pullum-sports.co.uk/acce...ede-duel-prong-powerlifting-belt/prod_24.html
This is the belt I'm getting. You really want a leather belt, the foam ones that SSUK do are too soft so don't really provide enough support. A friend of mine has one and I used to borrow it now and then but I began to find that it was too soft and would fold over quite easily. My brother bought this:
http://www.amazon.co.uk/Leather-Pow...YY/ref=sr_1_12?ie=UTF8&qid=1299785110&sr=8-12
and it has worked really well for what it is, the only problem is it isn't as good as the ones we are going to get and when you are as strong as he is you need some kind of protection.
I know this probably isn't all that helpful now but if you can arrange it, send that belt back. It costs way too much for what it is. Also the lever for SSUK belts aren't very strong and have been known to break very easily.
If you don't fancy either of the above I know there is quite a good lever belt done by Zulu Glove for about £40. Another thing is are you sure you want a lever belt, tend to be more expensive and are less easy to use IMO.
Again, sorry if it seemed rude, I just know I would appreciate the advice