The sum – more than double Radio 2 rival Zoe Ball’s reported £1.2m salary – will make Holden Britain’s best-paid female showbiz host.
The Britain’s Got Talent judge, 48, is estimated to be worth £6million and had also bagged deals with Marks & Spencer and TV shopping network QVC, as well as carrying out presenting roles.
Amanda will team up with Jamie Theakston, 48, on the show from June 3.
Emma left to spend time with her family and go on tour with the Spice Girls.
Amanda said: “I have no doubt that working with him will be hilarious for everyone. I’m not sure my face is ready for the early starts, mind you.”
The Mirror previously revealed how Amanda would take on the presenting job.
A radio source said: “Amanda was their number one choice. She is warm, funny and, of course, watched and loved by millions on Britain’s Got Talent.”
As well as Britain’s Got Talent, Amanda has presented This Morning and last week revealed she was a team captain on Celebrity Juice.
The BGT judge has recently returned to the ITV talent competition and revealed she would never “voluntarily leave” the show, which she joined in 2007.
She said: “Simon’s already discussing next year and has said he wants us all back but you never know.”
Bunton still presents her weekly Sunday show on Heart.
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