c1978 – I wish I still had this, not so much for the riding, but just to show we were thinking of MTBs in Britain even if we didn’t know they existed then.
The bike is a “Hercules” with DIY extended and strengthened forks to give more ground clearance, can’t remember where the handlebars came from, brakes are rod type for the wider rims (from an old delivery bike because they had bigger tyres) modified to work with cable levers. In the day I could wheelie the whole length of the street although a gang of us used to spend most of our time in an old quarry mixing it with the older boys on their 50cc or 125cc trail bikes. My mates all had highly modified bikes too, I was always envious of the one with two drivetrains (a chain on the left side with chainring and sprocket driving the rear wheel as well as usual position on the right side) – wish I had a picture of that too.