In message , Adrian
writes
On Tue, 02 Dec 2014 20:27:25 +0000, bert wrote:

obviously as it had failed the vehicle is intrinsically unsafe.

Seriously? Do you make this up for fun?

Let's say it failed on the rear fog light. Or the numberplate lights. Or
a tyre - but that's been changed, although there's not been a chance to
retest.
At the time of testing is what matters as far as MOTs are concerned. Not
sure now what the rules are about using a vehicle on the road form when
it fails to when it is retested. You are not obliged to have it retested
at the same station though it is usually financially beneficial to do
so.
--
bert