Last weekend 20 Lambeth volunteer police cadets aged 13 to 18 helped out with crime prevention patrols along the South Bank during the annual Christmas market.
Working between the London Eye and BFI Southbank, the cadets approached shoppers and tourists reminding those using high value electronic items such as mobile phones and music device to be extra vigilant.
The cadets also handed out crime prevention literature, local maps and stickers to young children.
Whilst on patrol team leader Amariah Watson helped to deal with a dispute between a hot dog seller and a customer who was burnt by flying hot coals.
"I thoroughly enjoyed being part of this. It was lovely to speak to the public in my uniform as a proud police cadet and to warn people about the use of their mobile phones," said cadet Hannah Longley.
"People were happy to listen and were keen to take advice, which was all our unit could ask for. A great event and I would be happy to do it again."
In previous years Lambeth police have set up a pop-up cop shop as part of the market.
• The Christmas market on the South Bank, now in its fifth year, is open until Christmas Eve.