Denny,
For drink driving offences, you will need to pay £90 to get your licence back (for up-to-date fees, click here). If you fall into the High Risk Offenders (HRO), then you will need to pay for a DVLA medical test as well. And if you've been banned and asked to retake the driving test, then you will have to pay for a new provisional licence, the theory test and an extended driving test to get your full driving licence back again.
