Bionic legs approved for UK sale

A set of 'bionic legs' for people who have difficulties walking has been approved for sale in the UK.

Rex bionic legs were designed by two Scottish school friends.

The legs are one of a handful of 'exoskeletons' which could offer more independence for people with spinal injuries or mobility problems.

Elena Bertoldo has flown over from Italy to be fitted with the device for the first time.