Everything you need to know about Rosemary Ferguson's 5 Day Plan

For Rosemary Ferguson, five is the magic number. The Nineties model-turned-nutritionist — and Kate Moss’s best mate — says her new meal plan will help you sleep better and boost your energy levels in a working week.

Ferguson’s The 5 Day Plan is an anti-inflammatory wonder menu that distils all the wisdom of her Harley Street clinic into a fast action plan. Fearne Cotton, David Beckham and Sadie Frost are among its A-list following.

Ingredients are tailored to your requirements and delivered to your door each day. The tagline is “feel fresh by Friday” and Ferguson says keeping the plan short makes it “doable”. “Not because people want to go out drinking, necessarily, but because people have social engagements, they’re going away, they’ve got kids.”

Ferguson insists that none of this is about punishment. Instead, her approach is healthy and focused: on four out of five of the days you’ll receive three nutrient-dense meals, a juice and a superfood shake (an example Monday menu features buckwheat toast with smashed avocado for breakfast, congee and steamed greens at lunch and Thai veggie curry for dinner), while the other day is liquid day.

You’ll get a mix of soups, smoothies, juices and a shake but Ferguson insists juice cleanses don’t have to be miserable, or dangerous. She does one a week (she says it helps with brain clarity) and says many of her clients say it’s their favourite day. Nick Grimshaw calls it “filling” and swears it wasn’t “torture”. “I had a light-bulb moment at the end. ‘Ohhh, I get it now. This is how to eat’,” he says.

Ferguson explains it’s about “wiping the slate clean”. She is against cutting out food groups in everyday life but for The 5 Day Plan there is no dairy, wheat, gluten, sugar, coffee, eggs or deadly nightshades (a vegetable family that includes tomatoes, peppers and aubergine) — a technique she uses in her clinic to determine which types of food cause inflammation and bloating (“it might be something random: kiwi fruits can cause havoc for some people”). “So we take them all out for five days, then I encourage mindful eating when you put them back in.”

For Ferguson the main result is emotional. She trialled the cleanse with gym-going friends who said they stopped feeling so “sluggish”. She says it resets the digestive system and helps you to eat more thoughtfully in the weeks after.

The plan is for men or women, though can be tailored to size (her husband, the artist Jake Chapman, is 6ft 4in so he gets larger portions) and dietary requirements (though many of the meals are vegan anyway).

Ferguson has also teamed up with BXR gym to create a “fitter by Friday” plan for trainers who need extra fuel, with two protein shakes with nut butters and chia seeds, which she calls “supersonic”. “These big boxing guys didn’t lose any muscle mass.”

The normal plan is designed to give regular gymgoers fuel to last the day. Meals take no more than five minutes to prepare. Ferguson is wary of the term “clean eating”, citing the risk of orthorexia. She says eating is more “complicated” now than it was in her day as part of the hard-partying Primrose Hill set.

Back in the Nineties as a model “we used to eat absolute trash”. She recalls there was champagne at 8am “at every single show” and she would regularly eat burgers and chips. Now her diet is more balanced — she still enjoys a glass of champagne and oysters at J Sheekey, and bacon with her poached eggs at Dean Street Townhouse, which the point of the plan. “It teaches people you can eat all of this food and feel amazing. It shows you the power of food.”

Prices from £265, The 5 Day Plan