The leader of Brent's Liberal Democrats had demanded that the borough's refuse collectors are fined, claiming that operatives have broken a contract condition and asked for Christmas tips.

Councillor Paul Lorber said that workers from Onyx Environmental Services had been seen knocking on doors in Sudbury "with the clear intention of collecting tips" as early as 7.15am on December 19, despite it being a condition of their contract that they never ask for gratuities.

He has demanded that a fine of £20,000 should be imposed, and that the money should be donated to the Mayor's charity.