Police forces have been responding to calls from concerned residents after they smelt a foul-smelling gas in the south east.
A Kent Fire and Rescue Service spokesman said: "South Kent residents are being asked to keep doors and windows closed due to a gas cloud that is believed to have come across from France, following reports of a gas leak from a factory 75 miles west of Paris."
Meanwhile, Metropolitan Police tweeted that the gas did not pose a risk to the public:
We are aware of reports of a strong noxious gas like smell in some South East London boroughs - no risks to public
More top news
David Cameron has admitted the General Election is on a "knife-edge" as he tried to woo voters with the promise of a "truly seven-day" NHS.
It's shaping up to be a windy weekend with spells of rain. However we will see some dry and bright spells too.
Two murderers who wed in Britain's first gay prison marriage will not be allowed to share a cell.