I went overdraft (only about 90p) with my bank (llyods tsb) and as I dont have a job at the moment, I haven't had chance to pay it off. As the months passed, the interest built up.
One day I put my card into an atm machine to see if it'd tell me how much I'm in the red and it retained my card.
I would like to know whether the interest has stopped/been frozen because I don't have my card or have any details of my account number or anything to make any payments.

Thanks for your help and time.

It's not even reached a grand. (To my knowledge) They havent sent me any statements or anything.
I think it's a few hundred at the most.

You should be able to get your account information over the phone, online, and certainly if you walk into a branch and ask to know the balance/overdraft, and how interest is accruing, they will tell you. Good luck.