radio 2
The comedian was on fine form during an appearance on Radio 2, his first in eight months.
"It’s not often I’m speechless but this has left me, quite frankly, gobsmacked."
He'll present his final show on the station next month.
The Radio 2 DJs were close pals back in the late 90s and early 00s.
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"I want everyone to know that whatever they are going through right now, they are not alone," the Radio 2 presenter said.
She took over the Radio 2 breakfast show from Chris Evans at the beginning of last year.
The BBC station could have lost two of its biggest names to the commercial broadcaster.
"Some days it was hard to walk out of my front door, let alone present a radio show."
A lot has changed since the presenter hosted the Radio 1 Breakfast Show in the '90s.