No payment was made on a third of suspicious motor insurance and household claims that were referred to investigators at the Innovation Group, the business support firm has revealed.
Psychological interviewing techniques are used by the group to detect and cross-examine potentially fraudulent claims.
The main reasons for a payout not being made was that the consumer was either unable to produce proof of purchase or they decided to withdraw their claim.
The highest number of suspicious motor insurance claims related to theft, with claimants most likely to live in Lancashire, Greater Manchester and Cheshire.
Most dodgy household claims related to claims for audio-visual equipment such as MP3 and DVD players, followed by damage to flooring or carpets.
The average age of someone making a suspicious household claim was 42, with the highest volume of these claims made in Lanarkshire, Nottingham and Lancashire.
Nikki Grieve-Top, head of intelligent research and development at Innovation, said: "Throughout the interview process, claimants are given various 'opt-out' points where they can walk away from a claim if it is suspicious.
"This often happens after one of our investigators cross examines the claim for any inconsistencies, or the claimant simply becomes impossible to contact."
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