Under the Rehabilitation of Offenders Act 1974, any conviction for which you receive a fine is spent after a period of 5 years. However, offences of drink driving cannot be physically removed from your UK driving licence for a period of 11 years due to the 2 in 10 year rule (ie a minimum 3 year ban for a second conviction in 10 years).
You can find details about the rehabilition periods on our web site at:
It is not as easy as you might think to obtain a copy of your CRB check unless you are an "umbrella body" registered with the CRB.
The easiest way to do this is to go through an organisation called "Disclosure Scotland". Try their web site for more information at: