The Fast 800 Active Deals, Sales & Codes in June, 2026

Co-founded in 2018 by Dr Michael Mosley and Dr Clare Bailey Mosley, The Fast 800 has grown from a diet book into a comprehensive online health platform. Headquartered in the UK, the brand builds on intermittent fasting principles to offer scientifically backed weight loss strategies. We appreciate that rather than pushing quick fixes, the team focuses on sustainable metabolic health for a large community of users.

The core offering revolves around flexible subscriptions and physical nutrition products. Users can access a 12-week guided programme starting from £30 a month, featuring personalised meal plans and daily support. For independent routines, we often point people toward the shop, which stocks vegan shakes from £23 alongside vitamins. Delivery is free on physical orders over £60, making it cost-effective to bulk-buy fasting essentials.

What sets the platform apart is its ongoing support ecosystem. Members gain access to nutritionist-designed recipes, guided workouts, and an active community forum. After completing the initial course, you can transition to the Graduate Support Membership for £12 a month to maintain progress. We highly recommend using the 7-day free trial to let newcomers test the digital resources risk-free.

Pairing these structured programmes with available NHS discounts and automatic bundle deals makes managing the ongoing costs of your health journey much more straightforward.

When is the best time to start The Fast 800 programme? We always recommend taking advantage of the 7-day free trial before committing to a paid 12-week subscription. This gives you a full week to test the nutritionist-designed recipes and guided workouts without spending a penny. If you decide to continue, keep an eye out for seasonal sales around January or September, when we typically see the steepest discounts on their monthly membership fees.

How do I combine the NHS discount with other offers? The 17% NHS code (5sf) is brilliant for bringing down the cost of physical products like shake bundles and vitamins, but it rarely stacks with automatic site-wide promotions. Our trick is to use the NHS code on full-priced restock orders. If the site is running a 2-for-1 vitamin deal or offering a free gift with bundle orders, skip the code and let the automatic discount do the heavy lifting instead.

Is the Graduate Membership actually worth keeping? Once your initial 12-week programme finishes, you are automatically moved onto the Graduate Support Membership at £12 a month. We have found this rolling fee is genuinely worth it if you need ongoing access to the community forums and maintenance meal plans. But if you have already hit your target weight and just want to buy shakes ad hoc, make sure you cancel the membership before your next billing cycle to avoid paying for features you no longer use.

Should I buy the shakes or stick to the meal plans?

If you work long shifts, the vegan shakes (starting around £23) are a lifesaver for hitting your 800-calorie target on fasting days. But if you enjoy cooking, the personalised meal plans are far more cost-effective over a 12-week period. We suggest mixing both—use the meal plans for dinner and grab a shake for breakfast.