A driver accused the police of being heavy-handed after an officer called for back-up when he caught her drinking a frozen drink at the wheel of her car.
Sophie Vaughan, 22, said a constable radioed for help after spotting her taking a sip from a raspberry blue Slush Puppie while she sat in a traffic jam.
She said another officer on a bike arrived shortly afterwards, followed by two colleagues in a riot van.
She was issued with a £100 fixed penalty fine and given three points on her previously clean licence for driving without due care and attention.
Ms Vaughan, from Wallington, south London, told the Sun: “It’s so petty and ridiculous. It was only a tiny sip. I wasn’t even moving.
“I’m outraged. And talk about overkill — to have four police officers dealing with such a petty thing is a joke.”
Brian Mooney, London spokesman for the Alliance of British Drivers, called for the “law should be exercised with discretion”.
A Scotland Yard spokesman said: “Any person who believes they have been unjustly issued with a fixed penalty notice has the right to appeal against this through the courts.”
