Hundreds of homes in Cambridgeshire were left without power on Friday after a riverbank collapsed under the weight of torrential rain.
50mm (2inches) of rain fell in the county in an hour in the county, which saw drivers trapped in their cars, and two supermarkets close. One Tesco shopper said water was “pouring through the ceiling near the fresh fish counter,” BBC News reported.
The UK Power Network said it had been working to restore power to homes and about 400 homes were still without power at about 9pm on Friday.
Meanwhile in Norfolk and Lincolnshire, people were evacuated from their homes, and an air display in Lancaster was cancelled.
In Cambridgeshire, fire service group commander Ryan Stacey told the broadcaster that seven crews are currently stationed in March, Doddington and Wisbech St Mary, where they are helping to evacuate residents and pumping water from homes.
“The exact number of properties affected cannot be confirmed, but we understand that we are assisting currently at least 60 properties,” he said.
He warned residents not to drive through standing water to avoid damaging their vehicles and encountering underwater hazards.
The force also tweeted urging people not to drive in flood water.
We're urging people not drive in flood water and not to call 999 unless in real emergency http://t.co/v53YPT5w4u— Cambs police (@CambsCops) August 8, 2014
A rest centre for those affected has opened in St John the Evangelist Parish Hall in Queens Street, March.
Cambridgeshire Constabulary Chief Inspector Nick Night said: "We would urge people not to go out in a vehicle unless absolutely necessary and also not to call 999 unless it is a real emergency where life is at risk.
“We do not have a stock of sandbags so please do not call 999 requesting any," he added.
Norfolk Fire and Rescue Service said officers have been dealing with about 40 flood-related calls with ongoing incidents in Swaffham, Necton, Outwell and Downham Market.
Twitter users took to the website to post photos of sodden roads.
A spokeswoman from the Met Office told The Independent that the torrential rain was caused by a lack of wind moving clouds across the sky, and was not linked to ex-Hurricane Bertha. The UK is expected to be hit by the remnants of the storm on Sunday.