A man dressed as a superhero is patrolling the streets of south London, waging a one-man war against parking clampers.
Angle Grinder Man, as he calls himself, refuses payment from drivers whose cars he liberates.
After a day's work as an office clerk he changes into a cape, tights and mask and heads for the streets where he uses the grinder to hack off the yellow clamps. The 38-year-old is understood to have freed more than a dozen vehicles since he launched his crusade, which began after he was clamped.
He said: "I got so angry. I went to a hire shop, got an angle grinder and sawed the clamp off. People were standing around cheering - it was fantastic. Before I returned the tool I took a picture of myself with the wheel clamp and stuck it in my car window with a note saying 'Don't clamp me - I have an extremely sensitive nature.'
"When I drove around I got a fantastic reaction from people. So I decided to become Angle Grinder Man."
Wearing a gold cape, gold boots, gold goggles and a blue latex suit, Angle Grinder Man looks more like a glam rock guitarist than a superhero.
He describes himself as "the UK's first wheel-clamp and speed camera vigilante cum subversive superherophilanthropist".
Angle Grinder Man's mission is against the law, as it is illegal to remove a clamp.
Drivers he helps will not have to pay removal and storage costs but they do still have to pay the original parking fine. "I'm the one taking the risk," he said. "But I don't mind - it's a public service.
"And I like wearing the costume." Angle Grinder Man has a website, anglegrinderman.co.uk, with a callout number.
This also features pictures of him at work.
The police are not amused. "Cutting a clamp free is criminal damage," said a spokesman.