Crimewatch Roadshow helps police across the country tackle everyday crime. At New Scotland Yard, Michelle Ackerley reveals how the Met are fighting a surge in knife crime.

Crimewatch Roadshow helps police across the country tackle everyday crime. Michelle Ackerley is at Hendon Police College to learn what it takes to be a detective.

Crimewatch Roadshow helps police across the country tackle everyday crime. With more than half of children under 12 having a smartphone, Rav reveals how to protect them online.

Crimewatch Roadshow helps police across the country tackle everyday crime. Michelle Ackerley meets the dogs training to join the police at the Thames Valley Police Training Centre.

Crimewatch Roadshow helps police across the country tackle everyday crime. Michelle Ackerley is with the City of London police to learn how to avoid thieves on mopeds.

Michelle Ackerley is at an airfield in North Yorkshire, finding out how police are combatting smuggling and people trafficking. Rav Wilding reveals the latest ticket scam.

Rav Wilding and Michelle Ackerley are live, asking for help with unsolved cases. In County Durham they find out how emergency teams prepare for fires at airports and on oil rigs.

Rav Wilding and Michelle Ackerley are live, asking for help with unsolved cases. Michelle delves into the growing problem of motorbikes being used to commit crimes.

Rav Wilding and Michelle Ackerley are live, asking for help with unsolved cases. Michelle is at West Yorkshire Police's training facility at Carr Gate, Wakefield.

Rav Wilding and Michelle Ackerley are live, asking for help with unsolved cases. Michelle is in Leicester to meet forensic scientists investigating historical mysteries.

Rav Wilding and Michelle Ackerley ask viewers for help with unsolved cases. In Manchester, Michelle explores the training that emergency teams undergo to prepare for the worst.

Rav Wilding and Michelle Ackerley ask viewers for help with unsolved cases. A look at how officers from Staffordshire used cutting-edge techniques to identify a body.

Rav Wilding and Michelle Ackerley ask viewers for help with unsolved cases. The team meets the horses who help police in a variety of ways.

Rav Wilding and Michelle Ackerley ask viewers for help with unsolved cases. Officers from Greater Manchester Police expose the driving offences which put cyclists' lives at risk.

Rav Wilding and Michelle Ackerley ask viewers for help with unsolved cases. In Liverpool, Michelle presents appeals from Merseyside police.

Rav Wilding and Tina Daheley ask viewers for help with unsolved cases. In the West Midlands, Tina finds out how the emergency services deal with illegal cannabis farms.

Rav Wilding and Tina Daheley ask viewers for help with unsolved cases. Tina learns how the West Midland Police's dog unit train their canine recruits to sniff out contraband.

Rav Wilding and Tina Daheley ask viewers for help with unsolved cases. A look at how paramedics are trained to deal with the most hazardous emergencies they could possibly face.

Today's programme comes from Bristol. Tina Daheley is live with Avon and Somerset's underwater search team. Rav Wilding is in the studio finding out about a new system that's being used at one prison to stop drones being used to drop drugs to the inmates.

Rav Wilding and Tina Daheley ask viewers for help with unsolved cases. In south Wales, Tina looks at the issue of fakes. And Rav meets a real-life pet detective.