there is no rabies in mainland uk afaik.
I am sure you are safe from rabies.
Have you had a tetanus shot recently? if not, you should get a booster.... other than that, just keep it clean and sterile and keep an eye on it.
I have been bitten and scratched by cats more than a few times and never had a problem.
I'm sure that you'll get loads of replies saying what "could" happen, but chances are it won't so try not to worry too much.