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:
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ITV News correspondent Dan Rivers was taken, by regime minders, to the hospital where those who were affected by the attack were treated.
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The composer says schools are failing to see how music can support behavioural and academic success.