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The 1:1 Diet by Cambridge Weight Plan Reviews 

270
TrustScore 4.5 out of 5

4.7

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Rated 5 out of 5 stars

Undertook the CWP under multidisciplinary medical supervision (cancer and diabetes). The focus was to cleanse the physical body of toxins, the weight loss aspect was an added bonus (started at UK size... See more

Rated 5 out of 5 stars

Losing over 6 stone with The 1:1 Diet has completely transformed my life — not just physically, but mentally and emotionally. Living with chronic pain, spinal conditions, fibromyalgia and three bow... See more

Rated 5 out of 5 stars

The best diet I have ever tried! Science based, clinically tested, safe and provides amazing weight loss results. There are 6 calorie programs, all tailored to you. Maintenance place a big role as i... See more

Company replied

Rated 5 out of 5 stars

I started on the 1st January 2025 and had lost over a stone six weeks in, love the shakes, yoghurt pancakes are one of my favourite along with the porridge. Fits into a busy life, so instead of pickin... See more

Company details

  1. Weight-Loss Service
  2. Food & Beverage Consultant
  3. Food Manufacturer
  4. Food products supplier
  5. Health consultant
  6. Life Coach

Written by the company

The 1:1 Diet, originally known as The Cambridge Diet, was launched in the UK in 1984 and has helped thousands of people worldwide lose weight and live healthier, happier lives. Through our inspiring Consultants, we provide meal replacements and products that help aspiring dieters lose weight and improve their health. Our meal replacements and products are specifically designed to ensure each dieter gets the correct amount of nutrients while reducing their calorie intake. Developed, tested and validated by expert nutritionists and researchers - “Your body gets all the nutrients it needs and uses its fat stores for energy. And because the diet is high protein, you don’t lose muscle mass or have cravings.” You choose your personal diet Consultant who will help you create your Plan and give you the products you need. There are two ways to start—you can either find and contact a Consultant from the thousands available or try the diet with no obligation via the Taster Pack for only £9.99. Both options are available on the website at https://www.one2onediet.com/.


Contact info

Promotion box for The 1:1 Diet by Cambridge Weight Plan

Try The 1:1 Diet for only £9.99

Start your weight-loss journey and grab The 1:1 Diet Taster Pack today

4.7

Excellent

TrustScore 4.5 out of 5

270 reviews

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4.7

All reviews

(270)

4 reviews in the last 12 months

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Rated 5 out of 5 stars

I’ve lost 7 stone in 14 months!

I’ve lost 7 stone in 14 months!

The 1:1 Diet has really changed my life, I suffer with chronic illness and mobility issues so needed to focus on my eating habits rather than hit the gym. I received lots of support, encouragement and I’m much more comfortable in my skin now!

2 May 2024
Rated 4 out of 5 stars

Having tried slimming clubs with…

Having tried slimming clubs with limited success, I found The Cambridge Diet (now called The 1:1 Diet) 18 years ago, and successfully lost almost 4 stones. I now use the products on and off for maintenance. I have tried shakes and bars from various competitors, but they rarely compare well and the so-called support is cursory or non-existent. With The 1:1 Diet, I can count on their years of experience in this field, product quality and the fact that they are still around after 40 years offering one to one support to their clients. Not many of the competitors can say that.

1 May 2025
Rated 5 out of 5 stars

The 1:1 Diet is amazing

The 1:1 Diet is amazing. I have never been able to stick to a Diet the way I have with The 1:1. Being able to have a dedicated consultant to help me, weigh me & give me advice was vital for me to lose 3 stone in 2 months. The products are really tasty and they offer next day delivery and so much support.

1 May 2025
Rated 5 out of 5 stars

Life Changing!

Life Changing!

A diet that worked for me and made me rediscover a good relationship with food! Consultants are so helpful and work to get the best for you!! Such a great variety of products and tastes took meal decisions right out my hands! Love it! 💜

1 May 2025
Unprompted review
Rated 5 out of 5 stars

The products are tasty and you get results!

The products are tasty, the support from your consultant is amazing and the results speak for themselves. It’s a flexible plan that you can introduce food when ready; it’s not just shakes either! There are over 40 products including cereal, soup, chocolate bars and more!

1 May 2025
Rated 1 out of 5 stars

This Diet is useless and didn't work…

This Diet is useless and didn't work for me plus its a total rip off because I paid delivery costs to consultant when i didnt need to. I discovered later when reading the T&C's that delivery is already included in price. Conveniently this wasnt communicated to me by consultant. Make sure you read the small print as they find every way of extorting money from vulnerable customers desperste to lose weight. Wouldn't recommend to anyone unless they have money to burn

25 January 2025
Unprompted review
The 1:1 Diet by Cambridge Weight Plan logo

Reply from The 1:1 Diet by Cambridge Weight Plan

Thank you for your feedback, and we're sorry to hear about your experience. We always aim to ensure our customers have a positive and transparent journey with The 1:1 Diet. It’s unfortunate that there was a misunderstanding regarding the delivery charges, and we apologise that this was not communicated clearly by your Consultant.

We take all customer concerns seriously and will look into this issue to make sure all information is shared openly. We understand how frustrating this must have been, and we’re truly sorry for any inconvenience caused.

If you would like to discuss your experience further, please feel free to reach out to our customer service team—we would be happy to assist you.

– The 1:1 Diet Team

Rated 5 out of 5 stars

Absolutely delicious products

Absolutely delicious products, this weight loss plan enabled me to lose three stone in three months. It to re-educated me on food And has allowed me to maintain my weight loss for over three years. Couldn’t recommend the plan highly enough! An added benefit is the great customer service and one-to-one support from your very own weight loss consultant!

14 March 2024
Unprompted review
The 1:1 Diet by Cambridge Weight Plan logo

Reply from The 1:1 Diet by Cambridge Weight Plan

Wow! 🎉 Huge congratulations on your amazing weight loss and, more importantly, maintaining it for over three years—that’s truly inspiring! 💪💙

We’re so happy to hear that The 1:1 Diet not only helped you reach your goals but also re-educated you on food for long-term success. Our consultants are passionate about providing personalized support, so it’s wonderful to know you’ve had such a positive experience.

Thank you for your kind words and for being part of The 1:1 Diet community! 💛

– The 1:1 Diet Team

Rated 5 out of 5 stars

I lost 2 stone in 2 months

I lost 2 stone in 2 months. It's hard going, but if you are strict and committed to the rules. The weight falls off. You have to be strict!
Charlie @Ipswich was absolutely amazing.
She helped and supported me through out the process. I'd definitely recommend her.

12 March 2025
Unprompted review
The 1:1 Diet by Cambridge Weight Plan logo

Reply from The 1:1 Diet by Cambridge Weight Plan

Huge congratulations on your incredible weight loss! 🎉 Losing 2 stone in 2 months is an amazing achievement, and we love hearing how committed you were to the plan. 💪

We’re also so pleased to hear that Charlie provided such fantastic support—our Consultants truly make all the difference! We’ll be sure to pass on your kind words.

Thank you for your recommendation and for being part of The 1:1 Diet community! 💙

– The 1:1 Diet Team

Rated 5 out of 5 stars

One diet that really does work

One diet that really does work
Amazing results and kept it off

12 March 2025
Unprompted review
The 1:1 Diet by Cambridge Weight Plan logo

Reply from The 1:1 Diet by Cambridge Weight Plan

Thank you for your wonderful feedback! 🎉 We’re so happy to hear that you achieved amazing results and have been able to maintain your weight loss—that’s what it’s all about! 💪💙

Wishing you continued success on your journey, and thank you for being part of The 1:1 Diet community!

– The 1:1 Diet Team

Rated 5 out of 5 stars

Great weight loss plan

Great weight loss plan. I felt fantastic all the time I was following 1:1 Diet. Loads of energy because only 3 products per day provide all nutritional RDA’s. No need for supplements. Full hydration and no need to obsess about food. I lost 3 stones in 3 months and I’ve pretty much maintained that. Definitely easy plan to stick to.

11 April 2024
Unprompted review
The 1:1 Diet by Cambridge Weight Plan logo

Reply from The 1:1 Diet by Cambridge Weight Plan

Wow! 🎉 Huge congratulations on your incredible weight loss and for maintaining it—that’s amazing! 💪💙 It’s fantastic to hear that you felt full of energy and found the plan easy to stick to. The 1:1 Diet is all about balanced nutrition and simplicity, so we’re thrilled it worked so well for you!

Thank you for sharing your experience and for being part of The 1:1 Diet community! Wishing you continued success on your journey. 💛

– The 1:1 Diet Team

Rated 5 out of 5 stars

The best diet in the world

The best diet in the world!

Awesome products, support and a diet that actually does work without the need for surgery or injections.

Once the first few days are done and dusted, you’ll feel like a new person. I found I was no longer hungry, I was sleeping better, I had more energy and mental clarity. The trick is keeping yourself busy, drinking your water and focussing on small achievable goals. Your house will never be so clean and tidy!

I lost 4 1/2 stones in just under 5 months and it completely changed my life.

Huge range of products, not everyone will like every product but 99% of them are just lovely. If you’re super fussy there will always be something that you’ll like.

I saved a fortune when on plan too as I wasn’t buying all the junk/takeaways etc and the savings from that more than covered the cost of my diet every week.

31 March 2024
Unprompted review
The 1:1 Diet by Cambridge Weight Plan logo

Reply from The 1:1 Diet by Cambridge Weight Plan

Huge congratulations on your incredible 4 ½ stone weight loss—that’s an amazing achievement! 💪 It’s fantastic to hear how The 1:1 Diet has transformed not only your weight but also your energy, sleep, and mental clarity. We love your tip about keeping busy—it sounds like a win-win for both your health and your home! 🏡✨

It’s great that you found products you enjoy and even saved money along the way! Thank you for sharing your experience and for being part of The 1:1 Diet community. We wish you continued success on your journey! 💙

– The 1:1 Diet Team

Rated 5 out of 5 stars

The best diet I have ever been on

The best diet I have ever tried! Science based, clinically tested, safe and provides amazing weight loss results. There are 6 calorie programs, all tailored to you. Maintenance place a big role as it teaches you portion sizes and all about nutritious meals without fuss.
Personal support from your coach is included.
Cost wise - each meal replacement from The 1:1 Diet is cheaper than a cup of coffee from your local coffee shop. Highly recommend.

11 March 2024
Unprompted review
The 1:1 Diet by Cambridge Weight Plan logo

Reply from The 1:1 Diet by Cambridge Weight Plan

Thank you for your fantastic review! 🌟 We’re so happy to hear that The 1:1 Diet has been the best plan you’ve tried and that you’ve had such great results! 💪

Our science-backed approach, tailored calorie programs, and one-to-one support are designed to make weight loss effective and sustainable, so it’s wonderful to hear that you found it so valuable. Plus, we love your cost comparison—great perspective! ☕👏

Thank you for your recommendation and for being part of The 1:1 Diet community! Wishing you continued success on your journey. 💙

– The 1:1 Diet Team

Rated 5 out of 5 stars

Fabulous Diet

Fabulous diet, I lost 4 stone with outstanding support from my very own consultant too!

5 May 2024
Unprompted review
The 1:1 Diet by Cambridge Weight Plan logo

Reply from The 1:1 Diet by Cambridge Weight Plan

Huge congratulations on your amazing 4-stone weight loss! 🎉💪 We’re so thrilled to hear that you had outstanding support from your Consultant—having that one-to-one guidance really makes all the difference!

Thank you for sharing your experience and for being part of The 1:1 Diet community. We wish you continued success on your journey! 💙

– The 1:1 Diet Team

Rated 5 out of 5 stars

The best weight loss programme I have…

The best weight loss programme I have ever tried, easy and quick and the results speak for themselves. When I first did the plan I lost 12lb in 12 days I was over the moon I now use the products for maintenance after losing my weight. I love the range of products too and they taste great.

11 March 2025
Unprompted review
The 1:1 Diet by Cambridge Weight Plan logo

Reply from The 1:1 Diet by Cambridge Weight Plan

Absolutely fantastic! 🎉 We’re so happy to hear that The 1:1 Diet has been the best weight loss programme you’ve ever tried! Losing 12 lbs in 12 days is an amazing achievement, and it’s fantastic that you’re now using the products for maintenance. 💪💙

It’s great to know you love the product range too—finding delicious options makes all the difference! Thank you for sharing your journey and for being part of The 1:1 Diet community.

– The 1:1 Diet Team

Rated 5 out of 5 stars

Absolutely life changing!

I lost 3 stone in just 10 weeks and have been maintaining my weight loss since 2013. This plan works when done correctly with the right support and guidance, it truly changed my life! If you’re looking for a structured, effective way to lose weight and keep it off, I can’t recommend it enough.

11 March 2025
Unprompted review
The 1:1 Diet by Cambridge Weight Plan logo

Reply from The 1:1 Diet by Cambridge Weight Plan

Losing 3 stone in just 10 weeks and maintaining it since 2013 is truly incredible—what an achievement! 💪💙 We’re so thrilled to hear how life-changing The 1:1 Diet has been for you and that the structure and support helped you reach and maintain your goals.

Thank you for your glowing recommendation and for being such an inspiring part of The 1:1 Diet community.✨

– The 1:1 Diet Team

Rated 5 out of 5 stars

Best diet in the world.

I think the best thing about this diet is the fact I didn’t have to queue up with a bunch of strangers in a group which I hate. I had an incredible Consultant who cheered me on whenever I needed it, and went on to lose 7 stone in 7 months. I can’t thank 1:1 or recommend it enough. If you’re thinking of doing it - just start!

8 March 2025
Unprompted review
The 1:1 Diet by Cambridge Weight Plan logo

Reply from The 1:1 Diet by Cambridge Weight Plan

Losing 7 stone in 7 months is an absolutely incredible achievement—huge congratulations! 💪💙 We’re so happy to hear that the one-to-one support made such a difference for you. Having a dedicated Consultant by your side really does make the journey more personal, motivating, and tailored to your needs.

Thank you for your amazing recommendation and for being such an inspiration!✨

– The 1:1 Diet Team

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