The couple, who have been married for nearly two decades, were among the many guests who attended the after-show party following the first night for An Evening with Anton du Beke at the London Palladium.
Looking perfectly in sync, the Good Morning Britain presenter looked handsome in a dark teal blue shirt and aubergine jacket while his wife Annie was dressed to the nines in a crush velvet blazer and black leather effect trousers.
On Friday's GMB, his good friend and co-host Kate addressed the ongoing speculation and joked that Good Morning Britain was trying to win Ben back. Click the video below to see what happened…
Ben had raved about his presenting gig on This Morning last week, and revealed that Gino D'Acampo had even cooked the presenters an amazing cheesecake on the show, and Kate had the best response.
"I felt a little back like…you know when your kids go round someone else's house, and go, 'Oh Sophie's mum makes amazing bolognese,' that's what it felt like for all of us," she said. "So, we didn't want to be outdone here and we've been working very hard on a cheesecake."
Meanwhile, away from the TV screens, Ben and his wife Annie are proud parents to two sons: Sam, 18, and Jack, 15. While Ben keeps much of his family life under wraps, the presenter occasionally shares rare insights into his relationship with Annie.
During a chat with close friend Kate Thornton on her podcast, White Wine Question Time, Ben offered a candid glimpse inside the early days of their romance whilst they were students at the University of Birmingham.
"We met at university - so you knew Annie when I just got into the telly - and I was sort of a mere puppy when it came to the world of broadcasting media," he explained.
"She has been through all this with me - the highs and the lows of all that experience. And she is still here, somehow is still putting up with me which to this day, I can't quite believe that I am extraordinarily lucky."