Residents have been forced to evacuate from a riverside village just outside London days after the deluge from Storm Henk.
Parts of Berkshire and Surrey remained underwater five days after the most recent rainfall, when the River Thames burst its banks.
Vulnerable people in Wraysbury were asked to leave their homes, a local school was closed and many roads were still impassable. One man took his suitcase home in a dinghy after a 10-day holiday to Antigua.
Pupils at elite boarding school Eton College were told to stay at home after constant rainfall and flooding overloaded its sewerage system.
The college said: "Following extensive flooding in the region, the sewers which serve the town of Eton flooded.
"Therefore, boys could not return for the scheduled start of term.
"We are in regular contact with Thames Water and we look forward to welcoming boys back as soon as possible."
Thames Water said: "The recent heavy rainfall, along with high groundwater levels and river flooding, caused our sewer system to overload. We are sorry to staff and students." It said teams would be carrying out a clean-up in the coming days.
The delayed start of term at the school, in Berkshire, comes as nearly 100 flood warnings remain in place in England following last week's Storm Henk.
The Met Office says that more cold weather is likely through much of this week, with an increasing chance of "wintry hazards" towards the start of next.
It added: "The UK is under the influence of high pressure, which is bringing colder than average weather for the time of year, and a marked reduction in rainfall amounts following a wet start toJanuary.
"These cold and largely dry conditions will persist through much of this week, with areas to the south particularly cold compared to average.
However, by the time we reach Sunday a northerly airflow develops, which could increase the chances of wintry hazards for some."
On Monday ministers said 2,000 homes in England had been flooded. The Welsh government said 37 properties had been flooded, 23 of them in Carmarthenshire. Only two flood alerts remain in Wales.
An amber cold health alert has been issued by the UK Health Security Agency covering the north-west, south-east and south-west of England and the east and West Midlands lasting until 12pm on Friday. A yellow alert is in place for the north-east and east of England, Yorkshire, the Humber and London.
