Revoked driving license

[havenobrain]

What does this actually mean?
Do you have to re take your test?

lmgtfy.com/?q=driving+licence+revoked+uk

Thanku for that but I can't seem to find the answer I need?
My friend had her license revoked 5 years ago and didn't know because she didn't change her address.

you need to reapply then www.direct.gov.uk/en/Motoring/DriverLicensing/MedicalRulesForDrivers/DG_186330