Headlight Covers

I've heard that tinted / coloured headlight lenses are now illegal on public roads, but I've tried finding this in writing and cannot.

I would like to fit a dark tint headlight lense to my Bandit (removable for night riding ofcourse) but don't want to risk getting pulled. I still see them for sale for other bikes though they seem to be getting rarer.

Does anyone know for sure whether or not these are illegal?

The only covers you are allowed legally is clear. i think you can get away with yellow at a push.

Okay, thanks.

I was hoping it was just an MOT failure.

They r on sale on Ebay the single round dark tint covers seen them last night while scooting through....