Unless there is very good evidence to counteract that, their claims will stand. Getting evidence that someone is lying is not very easy. Personal injury fraud falls into two areas. The first is the opportunistic, small-scale cheat, who has had a genuine bump on the head or botched medical procedure, but is tempted to exaggerate the extent to which they have been incapacitated. They may also have had a bad back from twisting awkwardly in bed, which they decide they might as well attribute to the accident.
Most frauds are opportunistic claims and most, therefore, are notoriously difficult to disprove.
The second type of scam is considerably more audacious. Another son, Zulfiqar, even pretended to be incontinent, paralysed and a deaf mute for 15 years after a street attack. He was caught out when investigators filmed him working out in a gym. Insurers are very reluctant to divulge the criteria that might bring a suspect claim to their attention, and sketchy in the details about how they try to trap them. Barnett admits to relying on a network of informants, as well as on whistleblowing from aggrieved or jealous friends.