Shopkeepers are being warned against selling eggs and flour to youths they suspect may be set on causing trouble over Halloween.

Police patrols will be stepped up in Runnymede and Spelthorne around Halloween in a bid to curb antisocial behaviour.

Neighbourhood Inspector Roger Nield had asked Runnymede safer neighbourhood team to encourage shopkeepers not to sell items to youngsters which can be used to target property or individuals.

He said: "Unfortunately there is a minority who thinks that trick or treating is a good excuse for throwing eggs or flour or generally harassing and intimidating others. I am appealing to retailers to be aware that youngsters buying eggs or flour may be planning mischief, and to make sure they ask what they are for and use their discretion if they are not happy with the answer."

Spelthorne police have said any damage caused to property will be treated as criminal damage or assault if a person is injured.

Spelthorne neighbourhood Inspector Sarah Greenhalgh said: "We want to make it clear that Halloween and bonfire night do not legitimise instances of criminal damage. "We don't want to discourage people from having fun, but we want to send a clear message that antisocial behaviour will not be tolerated."