Jonathan Morris ) gurgled happily, sounding much like
they were saying :

The other trick, more common now (an increase of 2000%) is bringing
your foreign registered car from another EU state and never
re-registering it here even after many years have passed. We've got
loads of Polish cars on our estate (but that's just as it is here, it
certainly isn't isolated to just one country), many which are in no way
roadworthy. They get no hassle at all. Nor will they get tickets,
speeding penalties or anything else. In fact, while they probably need
third party insurance if they ARE stopped, they don't need an MOT or
road tax either.

They are required to be legal in the country of registration - so if Poland
requires insurance/MOT/road tax, those must be current for the vehicle to
be legal in the UK. If Poland doesn't require any of those, then they
aren't required for the vehicle to be legal here - within the temporary
import time limit (6 months?)