Weight loss made personal.

For over 40 years, The 1:1 Diet has helped people around the world lose weight, build confidence, and live healthier lives.

It all starts with a simple belief: weight loss works best one-to-one. That’s why you’re supported by a dedicated personal Consultant who tailors your plan, keeps you motivated, and celebrates every milestone along the way.

Delicious, nutritionally balanced meals. Real food. Personal support. Results you can trust.

Discover our story

Backed by science. Loved by people.

Created by leading nutritionists and supported by decades of research, The 1:1 Diet gives your body the balanced nutrition it needs - helping you lose fat while supporting lean muscle and staying satisfied every step of the way.

How it all began.

Our story began in the 1960s, when biochemist Dr Alan Howard began researching the science of safe, effective weight loss. His work led to the launch of the Cambridge Diet in 1984 - a plan that has since helped millions of people around the world lose weight and feel healthier, happier, and more confident.

In 2018, we became The 1:1 Diet by Cambridge Weight Plan, reflecting what has always set us apart: genuine one-to-one support. Every Consultant–client relationship is built on empathy, expertise, and encouragement, because lasting change starts with people - not products.

People & ownership-led.

We’ve called Corby, Northamptonshire home since 1986 - the heart of our business and where our products are made.

In 2014, we became employee owned, joining the Employee Ownership Association and later being recognised as Employee Owned Business of the Year in 2019. Because when everyone has a stake, everyone gives their best.

Across our three Corby sites, we create our shakes, bars, and meals, supported by trusted partners in Yorkshire and across Europe who help bring them to life. We’re also proudly zero-landfill - with all waste either recycled or converted into energy.

How does it work?

Getting started is simple. You’ve got two easy options:

Whatever you choose, you'll have personal Guidance and real food that fits your life, right from the start.

6 delicious, nutritionally balanced meals for just £9.99 (€11.49). Soups, shakes, bites.

Order a Taster pack

Use our search tool to find a dedicated 1:1 Consultant near you.

Get Started

Supporting people to support others.

The 1:1 Diet is powered by direct selling - a community of passionate Consultants supporting people to reach their goals through genuine one-to-one care.

Every Consultant is given the tools, training, and flexibility to build a business that fits their life. With real freedom, meaningful rewards, and the opportunity to make a lasting difference, it’s a business shaped around people - not pressure.

Find a sponsor & become a consultant

Award-winning, for the right reasons.

The 1:1 Diet has been recognised time and again for making a genuine difference. We’re proud to be an award-winning business built on care, community, and real results.

Here are just a few of our achievements: