Hi,
I think you can top up your Access with the DLC, i'm sure ive heard of others doing this to make up the credits required. Don't know if it will cost you though, you could google distance learning centre and see what comes up. Also I know its along shot but do you not have any other credits at level 3 that they might accept, i.e Psychology or Sociology.
I had to send Notts a copy of all my certificates with the modules broken down to see if they would still accept it this year. Luckily for me they will.
Gx