Three hundred properties have been flooded over the last 24 hours, according to Downing Street.
In total, there have been 88 flood warnings and 188 flood alerts.
"The Environment Agency is monitoring the situation closely," the Prime Minister's spokesman said.
She warned that more rain and high winds could make the situation over the weekend.
More heavy rain and strong gusts will sweep across Britain this weekend, with further floods expected in the UK.
ITV News viewers have been emailing photographs of flooding in their area over the last few days.
Torrential rain expected in South West England, South Wales and South West Scotland.