Telephone and internet insurer 'esure' is to offer cover to over 250,000 previously excluded homes following a risk review.
The move will see esure offering home insurance cover to areas in the North West and South coast. Around 15,000 postcodes have been reintroduced.
Esure excluded the homes last year in an attempt to lower its home insurance premiums by £40 per household.
By re-examining the areas with flood defences it has reduced its exclusion rate from 10 to 9% of the UK.
Earlier in the year, esure began offering cover in Perth - which was badly flooded in 2000 - on account of the area's improved defences.
Esure Chief executive Peter Graham said: "There are many areas of the UK which have been failed by a lack of adequate flood defences or the failure of existing measures.
"Following our latest assessment work, we will be able to offer cover to nearly a quarter of a million previously-excluded homes, and we stand a good chance of being cheaper for many of them because we are not passing on the insurance liabilities of poorly defended areas to them."
To aid with its continuing assessment of Scottish risk flood expert Professor David Crichton will attend Flood Appraisal Groups to measure flood risk.
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