But when was the last time you saw a traffic copper?
The number of people driving without insurance and tax is epic. If your mate wanted to risk it, just stay away from major roads (with ANPR) and it'll be fine for a few days...
A mate of mine didn't realise his mot had expired for 9months until his insurance renewal was due!!
Car: 2010 Jaguar XFR (Stock - For now)
Gone but not forgotten: Highly Modified E90 335i LCI M Sport Manual (circa 480BHP/500lb ft)