Bicycle clutch control handle replacement in uk?

Hi, i had my first motorised bicycle working perfectly for the last two days. However the Clutch control handle came loose and was twisitng around and as i was tightening it the mounts for it sheered striaght off meaning i need an entirely new clutch control handle. The problem isnt going to be installing, its trying to find one for sale in the uk! I have looked everywhere and cant find any. If anybody could give me a link to a uk wwebsite that sell them i would be very grateful! Im supposed to be taking the bike to meet a friend on the weekend so really need a replacement ASAP. Thanks.

Hi, i just tried it and it works perfectly! took it for a 4 mile run and seems to do the job perfectly. Sadly it lacks a "lock" so i will have to keep it held in whilst cycling or use some string, but for the time being it works a treat and i will now be able to go and see my friend this weekend. Thank you very much.

hi, what i mean is the metal ring that goes around the hadnlebars snapped clean of the clutch hadnle leaving nothing left for it to be mouted back on, so i had to replace it with an old mountain bike brake lever.