When Mr Sam said it failed, did he mean it's been in for a test? If so, it's am MOT failure, end of. Any MOT, even if the previous one hasn't expired, is the current one. Thel latest one, pass or fail, is the one that's the legal one, even if it's only been a week since the one before. You can only have one MOT, and can go and have the test every month if you want to. The newest one is the legal one. It would be OK if you only have a pre test though, as long as the tester doesn't log on.
First time i've heard of that and i spent a year of my youth working in an mot garage.
No offence mate but if it was during the time there was only paper certs, you could get away with failing a test and still have a cert that proved the car had a test. I had been known in the past to visit one or two test stations if I had a fail till it passed. Now it's all on computer you can't.