Missing couple with newborn carrying substantial amount of cash, police say

Aristocrat's daughter Constance Marten and Mark Gordon, a registered sex offender in the US, were last seen 11 days ago

A couple missing for 11 days with their newborn baby have a substantial amount of cash, which is helping them evade the search effort, police have said.

Constance Marten, Mark Gordon and their baby have no luggage with them after most of their belongings were destroyed in a car fire, and are using cash to pay for taxis and places to stay. Detectives have also revealed that Gordon is a registered sex offender.