Cambridge Weight Plan was renamed The 1:1 Diet in 2019 — same company, same products, still sold only through its Consultants, and still not available to buy from its own website. Shake That Weight is the same kind of meal replacement plan, ordered online with no consultant, from £1.59 a meal.
This page compares both, format by format — price, range, plans and support — including where their Consultant model wins.
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The short version, before the detail below:
| Feature | The 1:1 Diet | Shake That Weight |
|---|---|---|
| Price per meal | From £2.56 | From £1.59 |
| How you buy | Via your Consultant | Online, any time |
| Support | Weekly 1:1 with your Consultant | App free with every plan, Facebook group, team |
| Plans | Six Steps | Six plans |
| Subscription | Not published | Never required — subscribe only if you want an extra 10% off, skip or cancel anytime |
| Delivery | Via your Consultant | Next day/weekend/collect; free over £65 |
| App | Not published | MyJurnee, free with every plan |
| Reviews | Trustpilot — not compared here | 4.51 from 20,443 reviews |
Yes. The 1:1 Diet is Cambridge Weight Plan under a new name — the same company renamed its consumer brand in 2019, and the products, Consultant network and Step structure carried over unchanged. Cambridge Nutritional Foods Ltd, based in Corby, has run the programme since it launched commercially in the UK in 1984, and the business claims over 30 million users worldwide.
“Cambridge Diet”, “Cambridge Weight Plan”, “The 1:1 Diet” and “one-to-one diet” are all the same brand, not competing products. The company is still trading and launching new products in 2026, still sold exclusively through its Consultant network.
No — not directly. The 1:1 Diet's product pages show what each item costs, but there's no basket or add-to-cart anywhere on their site — only “Find a Consultant” and “Get Started”. You can see the price of a shake; you can't put it in a basket.
That's by design. The 1:1 Diet is a direct-selling business — every Step requires an assigned Consultant who supplies your products and runs your weekly consultation. Their cost-comparison page notes prices can vary between Consultants, so what you're quoted may not match what's published online.
Shake That Weight works differently: order from our shop right now, same price everyone pays, no Consultant, no sign-up call. Shakes start at £1.99, and a single product — no plan, no minimum — from £0.65.
If a weekly face-to-face with a Consultant who knows your progress is what you want, that's a real benefit of their model. If you'd rather order tonight, that's what we're built for. And if you're a coach, clinic or retailer wanting to supply clients yourself, we do that on trade and wholesale terms.
The 1:1 Diet costs more than Shake That Weight on every format we checked. Here are both sides' own published single-unit prices, checked 5 October 2026:
| Format | The 1:1 Diet | Shake That Weight |
|---|---|---|
| Shakes | £2.56 | £1.99 |
| Soups | £2.56 | £1.99 |
| Savoury meals | £2.80 | £1.99 |
| Bars | £3.20 | £2.50 |
Each row is like for like, taken from each brand's own product pages on the same day. We're cheaper on every format, and every figure is checkable on both sites.
On a full plan the gap holds. Our Total Plan works out at £1.59 a meal over 12 weeks. The 1:1 Diet publishes a weekly rate of £62.79, which — divided across their own stated three meals a day, 21 meals a week — works out at £2.99 a meal. That includes something ours doesn't have to: a weekly one-to-one consultation, built into the price. Their site also states prices can vary between Consultants; ours is the same for everyone.
The 1:1 Diet's prices are their own, taken from one2onediet.com/products on 5 October 2026; their cost-comparison page states prices vary between Consultants. Ours are our standard single-unit prices on the same date. Where a plan rate is shown, ours is the Total Plan 12-week bundle and theirs is their published £62.79 a week divided by 21 meals.
These are low-calorie plans intended for short-term use — ours supply 20+ vitamins and minerals at over 30% RDA per meal. Anyone with a medical condition or on medication should speak to their GP before starting either.
Side by side: “not published” means their public website doesn't state it, not that they lack it.
| Feature | The 1:1 Diet | Shake That Weight |
|---|---|---|
| Buy direct from the website | No — no basket; “Find a Consultant” | Yes, order now |
| Price — shakes / soups | £2.56 | £1.99 |
| Price — savoury meals / bars | £2.80 / £3.20 | £1.99 / £2.50 |
| Average per meal, full plan | ~£2.99 — £62.79/week ÷ 21 | £1.59 — Total Plan, 12wk |
| Price includes | Products + a weekly consultation | Products; support free, not priced in |
| Price consistency | Varies between Consultants | Same for everyone |
| Taster pack / single product | £9.99 · no single products | £5.99 · from £0.65 |
| How you buy | Via your Consultant | Online, any time |
| Number of products | “Over 35” | 338 — 66 shakes alone |
| Veggie / gluten free / vegan | Veggie confirmed; rest not published | 181 / 140 / 21 |
| Plan range / TFR option | Six Steps · Step 1 | Six plans · Total Plan, 800 kcal |
| Support / weigh-ins / course | Weekly, via your Consultant | App (free w/ plan) + group + team; reminders; audio/written course |
| Instalments / NHS discount | Not published | Clearpay · 10% NHS discount |
| Delivery | Via your Consultant | Next day/weekend/collect · free over £65 |
Prices: one2onediet.com/products and our own site, 5 October 2026; their cost-comparison page says prices vary between Consultants.
In their favour: a named Consultant is a relationship an app doesn't replace, weekly accountability works for many people, and they've traded since 1984 — longer than any online-only plan.
+ extra 10% off every delivery when you subscribe
You get an app that’s free with every plan, a community and a team — instead of a scheduled weekly appointment. The 1:1 Diet's price includes a weekly one-to-one consultation: a named Consultant, face to face, checking your weight. That's real support, part of what you're paying for.
Shake That Weight works on demand instead. Every plan includes the MyJurnee app, free with every plan: daily weigh-in reminders, goal tracking, a private progress photo journal, an audio and written habit course from day one through maintenance, and craving support for moments a scheduled check-in won't reach.
Beyond the app: our Facebook group, thousands of people on the same plans, available at 11pm on a Sunday — plus our team by phone, email and live chat. We've supported 500,000 customers this way.
Neither is better in every situation. A Consultant gives you one person who knows your history. Ours gives you support whenever you need it, with no diary clash or consultation fee.
They run six Steps; we run six plans. Here's how they map, including where the fit isn't exact.
| The 1:1 Diet | Closest Shake That Weight plan |
|---|---|
| Step 1 — total food replacement | Total Plan — 800 kcal, 4 meals, total food replacement, short-term kick-start |
| Step 2 — 3 products + one healthy meal | Between two of ours — closest is Total Plan with one meal cooked in place of a pack |
| Step 3 — 2 products + 3 meals | Everyday Plan — 1,000 kcal, 2 meal replacements + one you make + snacks |
| Step 4 — 2 products + a snack, higher calorie | Active Plan — 1,200 kcal, built for training, a sensible start for most men |
| Step 5 — 1 product + meals you cook | Maintenance Plan — staged step-down, 3–4 weeks per stage |
| Step 6 — maintenance | Maintenance Plan, app still running |
| (no published equivalent) | 5:2 Plan — normal eating 5 days, 800 kcal meal replacements on 2 |
| (no published equivalent) | Medication Support Plan — 800 kcal alongside GLP-1 medication, up to 12 weeks, guided by your prescriber |
Step 1 is a clean match for Total Plan — both total food replacement. Step 3 is close but not exact: theirs is 2 products plus three cooked meals; our nearest, Everyday, adds a snack allowance instead of a third meal replacement.
5:2 and Medication Support have “no published equivalent” on their side — we've only checked what's publicly stated. The 1:1 Diet publishes no calorie figure for any Step, so we haven't invented one.
The 1:1 Diet lists over 35 products across bars, soups, savoury meals, shakes and smoothies. We publish 338, including 66 shakes alone — close to twice their entire range in one format.
Range isn't only about count. Across our shakes, soups, bars, meals and breakfasts we publish 181 vegetarian products, 140 gluten free and 21 vegan, each labelled per product. The 1:1 Diet confirms its soups are “veggie-friendly” but doesn't publish gluten free or vegan information — which may just mean it isn't listed, not that the option doesn't exist.
Both ranges cover the same ground: shakes, soups, bars and savoury meals for total food replacement or a step-down. The difference is choice within each format — nine shake flavours against our 66, for example.
You don't have to commit to a full plan to try either brand — though the cheaper way in is ours. Our Taster Pack is £5.99 for four products, against The 1:1 Diet's published £9.99, both checked the same day.
Beyond that: a single product, no plan, no minimum, from £0.65. Spread a bigger order with Clearpay, four interest-free instalments. NHS and emergency services staff get 10% off, no minimum spend, verified by email, work ID or payslip. The Shake Club earns a point per £1 spent; Refer a Friend gives £5 to you and £5 to them. Orders over £65 get free delivery; smaller ones go by Large Letter from £1.50. None of this is published on The 1:1 Diet's site.
Price, range and how you're supported are worth checking before switching plans. Can you see the full price before you commit, or does it depend who you're assigned to? Is there enough variety that you won't get bored by week three? And if there's no weekly appointment, is there still somewhere to go when you need it?
The 1:1 Diet and Shake That Weight answer those questions differently, and neither answer is wrong — it depends whether you want a standing weekly consultation or the freedom to support yourself on your own schedule.
If Cambridge isn't the only plan you're weighing up, we've compared ourselves the same way against Slim & Save and Lipotrim, and set out the case for a diet alternative to any consultant-led plan.
Individual results vary, and a review illustrates one person's experience rather than proving what anyone else will get. At the time of writing we hold 4.51 from 20,443 verified reviews — read them for yourself before you decide.
"The website is great and easy to use. Delivery was good and quick. The products( I am Gluten free ).So many different options to choose from. Products are full of nutrients/ vitamins that the body needs and taste lovely. I highly recommend shake the weight and it so works if using for weight loss. 5 star "
"Excellent service with fast delivery thanks "
"They arrived well packaged and on time. The bars are bigger than expected and very filling. I haven't been hungry since using them. The taste is also superior to other bars I have used in the past. I particularly like the peanut ones and the chocolate cookie ones. I have lost over 3lb this week and have been having a sensible low calorie, low carb evening meal. I'm over 68yrs and had been finding it hard to shift the weight."
"Mix well and tasty keep you feeling full for quite a while would be nice to have a raspberry one just to mix it up further."
"Lovely tasty shake flavours . I always keep a selection of shakes , pea soup, plain oatmeal porridge and bars at home. This helps me to keep my weight down .I even gift some to a friend in the USA and she says these flavours are excellent , and the better than what she is able to purchase there . Delivery is fast , customer service is friendly helpful and attend to matters quickly. My only complaint is being sent of a Collagen drink( freebie ) that wasn’t vegetarian. As I buy some discounted products as well as full price , the basket price is reasonable."
"The shakes are actually the best TDR shakes that ive tasted and also the chicken soup. The bars are acceptable. Customer service always good. But unfortunately the fact that so many of the shakesand soups are out stock and for a long time let's the company down."
Compare the six against The 1:1 Diet's Steps above and pick the closest match — Total Plan for total food replacement, Everyday for less strict. From £1.59 a meal.
No Consultant, no sign-up call — checkout like any other order, with Clearpay if you'd rather spread the cost.
Free with every plan — weigh-in reminders, the habit course, and our Facebook group whenever you want company.
Move through Maintenance when ready, app and support still running, no consultation fee added.
+ extra 10% off every delivery when you subscribe
The difference: The 1:1 Diet costs more on every format, and the price includes a Consultant you must be assigned before you can buy anything. Shake That Weight is online, direct and cheaper — shakes from £1.99, a full plan from £1.59 a meal — with free support if you want it. Start your plan from £43.30, or build your own bundle.
