A report in a UK newspaper has cited research suggesting that as many as one in five claims for payouts on critical illness cover are being rejected by insurers.

The Mail on Sunday cites research from the intermediary firm Lifesearch, which shows the proportion of rejected claims among each of the UK’s leading insurance players.

Of the companies surveyed by Lifesearch, Bupa rejected some 21.5% of claims, Norwich Union 26% and Prudential 20%, the report says. The newspaper has been running a campaign to highlight the problem of non-disclosure in the life insurance field.

There is concern that some insurers are waiting until policyholders make a claim on their critical illness cover before rejecting them on the grounds that they failed to disclose an often-unrelated medical condition.