Network Rail told ITV News that there is no gas leak at London Bridge station and that train services are running as normal.
They added that four people were taken ill but the incidents were not related to each other.
More top news
As many as 2,000 British holidaymakers could be among those stuck at emergency accommodation as snow causes chaos for holidaymakers.
Tributes have beenb paid to Harry Potter and Outnumbered actor David Ryall who died on Christmas Day aged 79.
We are set to enjoy some sunshine after all that ice, snow and frost - albeit with temperatures still low.