The insurer, moving to the Aviva brand next year, paid out over £58m in CI claims during the first half of 2008, compared to £52m during the same period of 2007.
The number of claims declined for non-disclosure of medical information fell to 1.5 per cent, compared to 6.7 per cent for the first half of 2007.
Of the 813 CI claims paid, most common reasons to claim include cancer, which made up 60.1 per cent of total claims, heart attack 7.7 per cent and stroke 6.9 per cent.
NU head of protection products Louise Colley says: “ “In recognising the needs of our customers we continue to lead the market in reducing the number of claims rejected for non-disclosure. We are actively tackling this issue, something that highlights our commitment to providing the peace of mind our customers demand.”