You will need both your driver number and your national insurance number. (Tip for NI number - look at a payslip or a tax return).
Hmmm, or another tip for NI number - it's your NI number!
Okay, perhaps I'm a bit of a sad git for knowing my driver number (although actually when you know how it's constructed it's not difficult) ... but am I really unusual in remembering my own National Insurance number?
Anyway, thanks for the link. I confirm that I also do not have any class A entitlement.
Out of interest, how many people have managed to avoid the photo licence and still have an old red (or even green) paper only one?
~iw