In reply to owlart:
> (In reply to Blue Straggler)
> [...]
>
> Then you would be very wrong. An MOT test overrides the last test carried out, irrespective of when that test was done, or what the result was. You could pass the MOT today, have it retested tomorrow and fail and then be illegal to drive, you can't pick and choose which MOT you want to drive under.
That is the exact opposite of what the MOT testing station told me. A MOT certificate cannot be revoked. By failing the MOT within the year you still have a valid MOT, with a VT30(?) (Refusal to Issue a NEW MOT).
Unfortunately, what you also have is a car that the MOT station has said is not roadworthy, and this is logged on the DVLA database!
So you cannot be done by the police for driving without a current MOT (as your existing certificate is still valid), but you can be had up for driving a car that isn't roadworthy. Also, your insurance may not be valid.
It is a grey area. If you failed the MOT because of a blown headlight bulb and were driving during the day then you car would likely be fine if you happened to be stopped by the police. If your tyres are bald then your car would not be roadworthy and they would charge you relating to that, the same as if your tyres were bald 6 months after passing your MOT.
FWIW I had the same issue in August. My car needed welding work but the garage coudln't book it in for a fortnight. The MOT testing garage told me that the fault was not safety critical but despite that I felt wary of driving the vehicle as I was worried if my insurers would cover me.