Number plate light and MOT

[chilly]

I've just taken my 1966 pick up for it's MOT and it's failed because it has no rear number plate light.
There's been a blanking plate over where the light would be since it was restored around 12 years ago. I realise that if it had one fitted that it would have to work
The same garage has passed it for the last 3 years with no problem. The tester looked up the relevant VOSA page and said that the info looked to have changed and that there didn't seem to be any exemption before a certain manufacture date (he seemed to think there used to be).
Does anyone know whether having the light is definitely a requirement on a 1966 car?

[amgrave]

Yes, the previous tester probably missed it or was being lenient

[mike.perry]

A working number plate lamp is definately compulsory

[bmcecosse]

No point arguing with these guys -just fit one!

[chilly]

Cheers guys.