The Summer of '71 by Ted Bun

An attack, a shouted warning and a race to safety!

I whirled round putting an arm up defensively, as I did my crash helmet struck an arm and a cosh dropped to the floor with a thud. A curse and heavy boot lash towards me, I put a foot out to block the kick. The reinforced sole of my biking boot crunches against the shin of my assailant. The perfect over the ball tackle. My attacker falls and hits his head on the wall.
"Get out of here!" It is a skinhead girl, she is pointing up the road to where a gang of, maybe, twenty people are heading my way, fast.

A well-crafted plot and snappy dialogue. says author of The Girl in the Baker's Van Richard Savin.

Mick Crooke is a mild-mannered student of Computer Science ... The owner of a Triumph Trident, yes, he is a biker.
On a hot summer night, back in June 1971, Mick meets Samantha Loch under unusual circumstances.

A meeting between a young man and a young woman.
Set against the undercurrent of the all-pervasive violence of Britain the early 1970s. The aggressive youth culture of the Skinheads and post-Kray Twins criminal underworld.

Can their romance endure?