Greenwich Foot Tunnel pedestrians taken ill after 'unusual smell'
The Greenwich Foot Tunnel in south-east London had to be closed when seven pedestrians were taken ill.
The patients were treated at the scene by London Ambulance Service after becoming unwell shortly before 19:30 BST on Friday.
The foot tunnel goes under the River Thames, linking Greenwich with the Isle of Dogs.
A spokesman for the Metropolitan Police said there had been reports of an "unusual smell".
An ambulance service spokesman said the pedestrians did not require hospital treatment.
He said after getting the reports an ambulance crew, a cycle responder and a hazardous area response team were despatched.
The Met spokesman said: "We had reports just after 19:00 BST of an unusual smell in the Greenwich foot tunnel.
"A number of people reported difficulty breathing, but we are not aware of any casualties.
"The tunnel has been checked and has now reopened."