Cops have been warned to be on their best behaviour -- after they were filmed using riot shields to sledge down a snowy hill while on duty.

The group from Thames Valley Police had been on on Boars Hill, Oxford, earlier this week when they decided to have a bit of fun.

Much to the shock of other people who were playing in the snow, the officers arrived at the top of the hill carrying riot shields.

They then proceeded to put them on the floor and push each other down the hill - all the time in full uniform and high-vis jackets.

But after complaints bosses have told them their actions were "a bad ides" -- we agree, there weren't enough shields to go round.

Supt Andrew Murray said: "I have spoken to the officers concerned and reminded them in no uncertain terms that tobogganing on duty, on police equipment and at taxpayers' expense is a very bad idea."

(newslite.tv)