Andrew confirmed earlier today on Twitter how he was moving to Global after 21 years at the BBC.
Retweeting the news to her 837,000 followers, Susanna penned: “Congratulations on the new role but this is a huge blow for the BBC and for those of us who rely on The Andrew Marr Show to set us up for the week ahead.
“Wishing the very best, to the best.”
Andrew shared the news earlier on his own page writing: “Personal announcement.
Global tweeted: “@AndrewMarr9 is joining Global in a broadcast exclusive.
“Andrew will be presenting new shows on @LBC & @ClassicFM, a new weekly podcast on @GlobalPlayer, and will also write a regular column for http://lbc.co.uk.”
Susanna wasn’t the only person to react to the news as several of Andrew’s colleagues responded.
BBC Newsnight’s Lewis Goodall said: “What a huge loss to the BBC Andrew but what an incredible contribution over so long.