Dom Littlewood goes behind the scenes at some of some of Britain's most secure institutions to see how they keep us and the country safe. On today's show, he fulfills a childhood dream, riding up front with a train driver as he checks out all the tech keeping the UK's railways safe.

He sees how bouncers are trained to keep the peace on a night out. And home security expert Jenny Donaldson has advice on how to deal with distraction burglary when she meets a guy who unwittingly let a thief into his home.

Dom Littlewood is at Heathrow, where he checks out the security around air freight and gets special access to the Border Force warehouses where they keep goods seized by customs. Security expert Sukie Madahar has advice on how to keep your pets safe from thieves.