I don't know much about this bike, It's all original and in mint condition,
I'm guessing it would be around early 1980's
MX Brakes, 3 Speed Sturmey Archer.
I think that is a Halford swon model from about 1983 ish. They used to do a 20" Turbo in black and red with the same graphics - this looks like to be a Raleigh Bomber restickered, or at least a copy of one - a great piece of memoribilia!