There is still a "danger of death" in parts of southern Yorkshire after some areas have experienced a month of rain in 24 hours.
Seven severe flood warnings are in place – all on the Don River, in and around Doncaster.
There are also 66 flood warnings, covering rivers including Trent, Dearne, Derwent, Ryton and Soar.
A yellow weather warning in case of rain covers Northern Ireland until 8 pm Saturday.
Another in England, linking Oxford to Brighton and Portsmouth, begins at 11 am on Saturday and continues for the rest of the day.
But areas hit by torrential rains in the past two days – southern Yorkshire and the Midlands – are expected to avoid further fallout on Saturday.
Boris Johnson said the floods were not a "national emergency" – Labor Party leader Jeremy Corbyn called for an investigation.
Prime Minister Friday visited the city of Matlock in Derbyshire, affected by the floods, near the place where a woman died in a swollen river.
He thanked members of the emergency services and said that the government had allocated £ 2.6 billion for "a comprehensive program of flood protection and preparedness for floods".
Mr Corbyn called for a survey on ways to improve the UK's flood defenses.
"My thoughts go to the family of the deceased woman after being swept by the floodwaters in Derbyshire," he wrote on Twitter.
"There needs to be a survey of these floods and what more needs to be done to protect communities from growing flood risks."
Sheffield City Council declared a major incident after the Don had blown up its banks in some areas.
The owner of a license, Farooq Sabir, said his business was "dipped in water" and that "trying to save anything was just impossible".
Residents of Toll Bar, near Doncaster, said the downpour was "almost biblical".
The South Yorkshire Fire and Rescue Service has found more than 100 people stranded.
The Environment Agency said the Peak District received 4.4 inches (112 mm) of rain on Thursday – the highest total ever recorded in England – while the flood-hit Sheffield regions received 3 , 8 inches (85 mm) during the same period.
The average monthly precipitation for Yorkshire at this time of year is 89 mm (3.5 inches).
Alex Burkill, meteorologist at the Met Office, said: "Some places have experienced rain for a month in a day.
"The rain is weakening and moving south, but its impact will obviously continue to be felt."