Paul Davey / FameFlynet UK
Emergency at Number 10: Ambulance outside 10 Downing Street
The emergency response vehicle was parked outside the Prime Minister's home on Tuesday.
Sources nearby said a 'member of staff' was taken ill and wheeled out with paramedics.
London Ambulance Service (LAS) has been contacted for information.
Emergency services were called out to Downing Street Pictures emerge during emergency at 10 Downing Street Tue, March 7, 2017
A staff member at London's 10 Downing Street has been taken ill and an ambulance is on the scene
Paul Davey / FameFlynet UK 1 of 5
An ambulance arrives at 10 Downing Street after a staff member is taken ill in London, England, UK