The Met Office has issued a “yellow” weather warning for the South-east over Wednesday night and into Thursday morning - with heavy rain set to cause problems for London commuters.
The warning is in place for the South and South-east of England from 5pm on Wednesday until 6am on Thursday.
The Met Office said people can expect spray and flooding on roads, which could make journey times longer, while bus and train services will be “probably affected”. It also warns flooding of hopmes and businesses is possible.
The Met Office is predicting rain for London throughout Wednesday night with at least a 90% chance of precipitation until 8pm. The rain is expected to continue into Thursday with a 20%-80% chance of rain through to 7am.
For Thursday morning, the warning is extended to the North and North-east of England as well as the eastern part of Scotland.
For Friday, the warning is only in place for the east of Scotland. The weekend is forecast to be a largely cloudy affair for London.
This will be a relief to Londoners, after Wednesday and Thursday - which the BBC said was likely to be a washout in the capital.
BBC forecaster Helen Willetts said: “As the rest of the week progresses, the rain continues to pile up and so with another low pressure rolling in we could see 30mm to 40mm in places and by the end of the week in access of 80mm or 90mm may have fallen across the north east of Scotland.
“Now this is the next area of low pressure coming in with its strong winds, pushing rain across many parts through the coming night and into Thursday.”