Paddy Hopkirk system 90.
I believe from Halfords and similar to those sold by Halfords now.
Possibly 20 years old but only used on a few occasions and then stored.
The only thing I think is missing is one black rubber suction cup, which I reckon could be replaced/adapted. See photos.
Otherwise in very good condition
Rear mount cycle carrier (Twyford RG10)
This offer has been gifted to someone and is no longer available.