Three severe flood warnings have been issued, meaning there is a risk to life, in areas within Bedfordshire and Northamptonshire.
Storm Bella is forecast to bring yet more strong gales and heavy rain to the UK and Ireland, a day after parts of England saw severe flooding.
Winds reaching up to 70mph are expected in coastal areas on Boxing Day, along with further downpours.
The Met Office has predicted that 15-25mm of rain will fall in Wales and southwest England, reaching 40-60mm over some hills.
There is also expected to be a period of heavy rain affecting western and southern areas.
Some areas are already saturated after recent rainy weather and flooding.
On Christmas Day, residents in more than 1,300 homes along the River Great Ouse in Bedfordshire were asked to leave by police after it burst its banks, causing bridges and roads to be flooded.
A local resident in Bedford told Sky News the area often gets flood alerts, but she hasn’t seen the water rise this high over the last two decades.