I could not find a search Icon so forgive me if this has been posted many times. sports games
Is there a UK supplier?

Look for local electronics stores or hardware stores that might carry batteries. Stores like Currys PC World or B&Q could have what you need. A UK-based retailer that specializes in batteries and may offer the specific type you are looking for.

I'm having trouble finding a battery like this I ordered some from Amazon and they were too big the connecter is flat on top where can I find one that will work

If you know the brand of the device that uses the battery, check the manufacturer's website. They often sell replacement parts, including batteries.