Many of Andrew Marr's colleagues in the media took to Twitter to express their sympathy.
Fellow BBC politics presenter Andrew Neil wrote:
Very distressed to hear news about Andrew Marr. Best wishes for full and speedy recovery.
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.
Former Tory MP Louise Mensch said:
More top news
Despite overcast weather a large crowd joined veterans and gathered around Dunkirk's memorial square to pay their respects.
A German 65-year-old teacher from Berlin has given birth to quadruplets after a pregnancy that was widely criticised because of her age.
Although there are bright skies for many as we start the bank holiday, more central, eastern and south eastern regions will be cloudy.