How can I check the securiy code for my radio?

I had a new battery fitted and ever since the radio does not work and is requesting a code. I have tried several times to put the code in, but it still does not work. I bought the car second hand. Could anyone check to see if the code I have is incorrect as the garage want to charge me £25 to tell me the code which maybe the one that I already have. The code I have is 1229 and the serial number is BP026318397143. If you need to know its a Rover 45. Thank you.
Helen, May 2008


done
If the code that Nigel gave you doesn`t work, then try 0813....Please post back here whether successful or not

RegWorts, May 2008
Nigel,

Thanks, I will leave radio on for an hour then try the code. Thanks for your help
Kindest regards Helen

Helen, May 2008
hi Helen, I make your code to be 1138

nigel, May 2008
link Click here to see other fixes for Rover.