Journalist and TV presenter Andrew Marr has been hospitalised after suffering a stroke yesterday.
The presenter, who fronts the BBC's Andrew Marr Show and has produced an acclaimed series charting the history of Britain, was taken to hospital after falling ill. He was later diagnosed with a stroke.
Doctors say he is responding to treatment and his family have asked for privacy.
A statement from the BBC said: "The hospital confirmed he has had a stroke. His doctors say he is responding to treatment.
"His family have asked for their privacy to be respected as he recovers.
"His colleagues and the whole BBC wish him a speedy recovery."
Marr, 53, joined the BBC as its political editor in 2000. On his Sunday morning politics show last week, he quizzed David Cameron on the UK's relationship with Europe and his decision over child benefit cuts.
James Landale, the deputy political editor for BBC News, will be presenting the forthcoming episode of The Andrew Marr Show.
Outpour of sympathy
An estimated 150,000 people in the UK have a stroke every year, accounting for one person every five minutes. Most sufferers are over 65 but it can affect anyone, including children and babies.
A stroke occurs when the blood supply to part of the brain is cut off. They happen suddenly and the sufferer may become numb, weak or paralysed on one side of the body.
Marr has been a keen long-distance runner since his childhood, however he has said that in his past he spent a few years "hard drinking" and smoking.
Following news of his stroke, a number of public figures expressed their concern and sympathy for the presenter. Ed Miliband said: "My thoughts are with Andrew and his family. Hope he gets well soon."
Guardian columnist Polly Toynbee tweeted: "Andrew Marr, renaissance man, polymath, wise commentator, painter, runner, brilliant cook - and ace editor. Get well soon. Needed in public life."
Author Salman Rushdie said: "So sorry to hear about Andrew Marr's stroke. All the best to him and his family and here's to a full and speedy recovery."
Marr is married to journalist Jackie Ashley and the couple have three children together.