London cabbies are planning another go-slow protest today over the city’s policies on taxis.

Cabbies will snarl traffic starting around Trafalgar Square and Whitehall at 2 p.m., said Steve McNamara, the general secretary of the Licensed Taxi Drivers Association.

The association is calling for a rethink of Transport for London rules on rickshaws, illegal minicabs, unlicensed operators and the car-sharing service run by Uber Technologies Inc., which McNamara said was endangering his members’ jobs.

On June 11, traffic was jammed in cities from London to Madrid and Berlin to Paris as strikes and gatherings by more than 30,000 taxi and limo drivers blocked tourist centers and shopping districts in a protest about Uber.

“We are giving black cabs more opportunities to earn a living,” Uber’s U.K. and Ireland general manager Jo Bertram said in an e-mail today.

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Photo Credit: Queue of taxis outside Marylebone station. (Mick Baker)rooster / Flickr