Are these legal ?

Something tell's me deep down they're not,,,,,,,,,,,
http://www.ebay.com/itm/Hide-MOTORCYCLE ... es&vxp=mtr

NO. I think you can be nicked just for having one fitted.

No doubt.

I don't see the point, if you were going to do that you may as well just ride with out a plate for free.

When I pissed off those 2 bike cops for following them over the speed limit and they pulled me. One of them was looking real hard all around my tail tidy to see if it flipped up. I did have 'Ride it like you stole it!' written on the plate at the time (new plate ordered without the next day) Damn they were so pissed. We only went up to 85 on a short section of dual carridgeway and 75/80 on the A road. Told me I was the kinda rider who gave bikers a bad name The fact I'd been ragging it all the way from London well over a 100 most of the way was something I thought best to keep to myself. Anyway if they had found that on my bike I think they would have thrown the book at me.

bad name indeed