"2. A test certificate relates only to the condition of the components examined at the time of the test. It does not confirm the vehicle will remain roadworthy throughout the validity period of the certificate"
I think that clears up any ambiguity.
Also, as has been hinted at elsewhere, once a test certificate, whether pass or fail, has been issued, your vehicle is "on the system", and if it's recorded as a fail, then any passing policeperson with an ANPR camera will see that, and you'll have questions to answer about why you're driving an unroadworthy vehicle.
At that point you'll need to provide evidence that you are either driving it to or from a garage for repairs, or the MOT testing station, by the most direct route.
I find, unless you're a fully qualified barrister, that in the case of ambiguity, it's best to assume the worst interpretation.