Know Your Flood Risk, the Worcestershire-based flood campaign group has warned that house insurance premiums could rise in the next year. Additionally a government agreement with insurers that currently guarantees cover for vulnerable homes is due to end in June 2013.

Ms Donhau, from the group, said: “There are 8,000 homes at risk of flooding in Herefordshire alone.

“One in four homes [nationally] is deemed at risk of flooding, taking into account all forms of flooding – river flooding, ground water flooding, surface water, sewage and run-off.

“I’m not on an official flood plain and I didn’t know I was at risk until I went downstairs and found three foot of sewage in my home [in 2007].”

The Know Your Flood Risk group warned that some particularly vulnerable homes might struggle to obtain insurance at any price from next year.

Ms Donhau added: “The way to keep insurance companies sweet is to protect your own property.”

The Know Your Flood Risk group launched its national awareness campaign in Bodenham, Herefordshire.

According to the Association of British Insurers (ABI), damage caused by floods in summer 2007 cost the industry £3bn.