The couple, who dated for 12 years, called time on their relationship in December 2023 but the reasons behind the separation have been kept private.
However, in photos obtained by MailOnline, the professional chef and Saturday Morning presenter was seen walking alongside his rumoured new partner, Kim Johnson, a personal trainer who was previously married to businessman Arun Nayar, though neither party has confirmed they are an official item.
Prior to his relationship with Louise breaking down, James was very open about how he had "no interest" in marriage, and never made plans to start a family. He previously told Prima magazine: "Would I do the same thing again? Probably, because it's made me who I am. And why does everybody have to follow the norm anyway?"
However, he and Louise did live together in James' idyllic country home in Hampshire. The property, which is where James films his popular cooking show, sits on 1.5 acres of land and boasts seven bedrooms, an outdoor kitchen and a greenhouse.
Fans who watch his programme will be familiar with James' kitchen where he films episodes, but did you know the kitchen he films in is actually located in his garage? We've taken a closer look inside James' home…
James Martin's impressive home with multiple kitchens
James decorated his kitchen set during the lockdown, painting the walls that were previously green in a taupe shade and replacing his open shelving with an enormous wall clock.
The chef's kitchen has a large stainless steel-topped island with two induction hobs and plenty of space for food preparation.
His appliances are also stainless steel, while a wooden cabinet resting against one wall showcases a selection of glassware.
In the warmer months, James often films episodes of Saturday Morning in his outdoor kitchen, so that he and his guests can enjoy the gorgeous surroundings while cooking and eating al fresco.
James is fortunate to have a home sitting on 1.5 acres of land, so it's no wonder that he's put up a greenhouse in his garden to grow his own vegetables for his home-cooked meals.
There's even a special meaning behind the decision to have a greenhouse at home: "When I bought this house the very first thing I built was that greenhouse to remind me of my grandparents," he said previously.
"My grandad was an amazing veg producer together with my uncle and that's why I fell in love with food I think.
"I've still got tomatoes; I grow them every year to varying degrees of success."
His vast green-trimmed greenhouse is nestled at the end of his garden and is usually brimming with fresh produce.
This photo shows just how vast James' garden is. The greenhouse can be seen just off the side on the right, while a huge lawn and rolling fields are seen in the background.
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