I'm from watford, but didn't realise those bikes were....my cousin had one of those just before we all got into real bmx's (well okay, puch murrays)..... this would be 79 or so, his was yellow..... until then the only bikes you would ride off a jump were grifters (or your mums shopper bike, which always went better than the grifter!!!)...... so anyway, at the time, my cousin had what I thought was the coolest bike, for a brief while, until the unfixable drum brakes stopped working, and I saw my first proper bmx's
Mike