Broadcaster Andrew Marr is recovering in hospital after suffering a stroke, the BBC confirmed.
The 53-year-old journalist and television presenter was taken ill on Tuesday, the corporation said.
The BBC said in a statement: "His doctors say he is responding to treatment. His family have asked for their privacy to be respected as he recovers.
"We will continue to broadcast The Andrew Marr Show and Radio 4's Start The Week with guest presenters in his absence.
"His colleagues and the whole BBC wish him a speedy recovery."
Marr is the corporation's former political editor.
He began his career as a newspaper reporter, becoming the editor of The Independent before turning to television.Fatal error: Call to undefined function related_posts() in /srv/bindings/6e9679b47e3a4bf5a3f70d6905d82419/code/wp-content/themes/overcast/template-parts/content-single.php on line 284