Best Diet Shakes Deals Online in the UK (25 Deals Found)

Last Updated - 20/03/2026 Sort By:

Best Choice
USN

New
USN I Diet Fuel Ultralean Meal Replacement Shake (Strawberry, 2kg - 36 Servings/Meals) High Protein, Low Calorie Drink t
USN HIGH PROTEIN SHAKE POWDER: Use Diet Fuel Meal Replacement Shakes to help you reach your weight-loss goals. Perfect s

£34.75 £45.00
Best Value
USN

New
USN I Diet Fuel Ultralean Meal Replacement Shake (Strawberry, 2kg - 36 Servings/Meals) High Protein, Low Calorie Drink t
USN HIGH PROTEIN SHAKE POWDER: Use Diet Fuel Meal Replacement Shakes to help you reach your weight-loss goals. Perfect s

£31.27 £45.00
New
CWP The 1:1 Diet 21 x Shakes 1:1 CWP Products

£45.00
12% Off
USN

New
USN I Diet Fuel Ultralean Meal Replacement Shake (Strawberry, 1kg - 18 Servings/Meals) High Protein, Low Calorie Drink t
USN HIGH PROTEIN SHAKE POWDER: Use Diet Fuel Meal Replacement Shakes to help you reach your weight-loss goals. Perfect s

£22.90 £26.00
New
Diet Fuel UItralean 4.4KG Meal Replacement Slim Weight Loss Whey Protein Shake
Plus, it’s high in protein to make sure you’re hitting your daily levels, and high in fibre, which is an essential part

£31.99
21% Off
USN

New
USN I Diet Fuel Ultralean Meal Replacement Shake (Strawberry, 1kg - 18 Servings/Meals) High Protein, Low Calorie Drink t
USN HIGH PROTEIN SHAKE POWDER: Use Diet Fuel Meal Replacement Shakes to help you reach your weight-loss goals. Perfect s

£20.61 £26.00
27% Off
SlimFast

New
SlimFast Meal Replacement Shake Weight Loss & Balanced Diet, Vitamins and Minerals, Low Calorie, High Protein, Strawberr
NEVER RUN ON EMPTY: SlimFast Balanced High Protein Meal Replacement Powder supports your weight loss and helps to keep i

£8.00 £11.00
New
Meal Replacement 2.2Kg Diet Shakes Slim Weight Loss Whey Protein Shake Powder
Plus, it’s high in protein to make sure you’re hitting your daily levels, and high in fibre, which is an essential part

£20.99
31% Off
SlimFast

New
SlimFast Meal Replacement Shake Weight Loss & Balanced Diet, Vitamins and Minerals, Low Calorie, High Protein, Strawberr
NEVER RUN ON EMPTY: SlimFast Balanced High Protein Meal Replacement Powder supports your weight loss and helps to keep i

£7.60 £11.00
New
PSN Diet Whey Protein 1Kg-3Kg Weight Loss Low Carb Meal Replacement Shake Powder
Pure Source Nutrition Diet Protein contains CLA (conjugated linoleic acid), a safe, natural, research proven diet aid. P

£17.99
SlimFast

New
Powder Tin Raspberry and White Chocolate
Just add milk, shake, and you're ready to go

£10.67 £10.99
SlimFast

New
Powder Tin Raspberry and White Chocolate
Just add milk, shake, and you're ready to go

£10.14 £10.99
New
Meal Replacement Diet Shakes Slim Weight Loss Fast Whey Protein Shakes Powder
Xcelerate Nutrition’s Diet Plus is a truly advanced, high protein shake designed to support fat loss. It contains a mult

£19.99
27% Off
SlimFast

New
SlimFast Meal Replacement Shake for Weight Loss & Balanced Diet, Vitamins and Minerals, Low Calorie, High Protein, Choco
NEVER RUN ON EMPTY: SlimFast Balanced High Protein Meal Replacement Powder supports your weight loss and helps to keep i

£8.00 £11.00
New
SlimFast Meal Replacement Shake for Weight Loss & Balanced Diet 16 Servings 584g
1x SlimFast Shake Powder Tub. 🧘 SlimFast 3.2.1. Plan (Optional Guide) 16 servings per tub (584g total). 16 servings (58

£10.99
31% Off
SlimFast

New
SlimFast Meal Replacement Shake for Weight Loss & Balanced Diet, Vitamins and Minerals, Low Calorie, High Protein, Choco
NEVER RUN ON EMPTY: SlimFast Balanced High Protein Meal Replacement Powder supports your weight loss and helps to keep i

£7.60 £11.00
New
SLIMFAST SHAKE POWDER 16 SERVINGS for Balanced Diet Plan All flavours
Dosage 20 mg. Flavour White Chocolate & Raspberry 16 Servings. Type Shake. Type of Diet Vegetarian. Format Powder. Item

£9.79
New
SlimFast Meal Replacement Powder Diet Shake High Protein Low Cal 8 & 16 Servings
MULTIVITAMIN AND MINERAL POWERHOUSE: 23 vitamins and minerals (incl. Source: COMMISSION REGULATION (EU) No 432/2012 of 1

£10.99
New
Sealions Diet Meal Replacement Shakes 450g Slim Weight Loss Protein Powder
If you're looking for products to help you smash through your training goals, we've got what you need. The majority of p

£9.99
New
1:1 Diet By CWP Shake N Go X7
Ready made. No need to refrigerate. Peach & Passion Fruit Yoghurt. Apple & Kiwi Yoghurt.

£20.00
New
Meal Replacement Diet Shakes Slim Weight Loss Fast Whey Protein Shakes Powder
Plus, it’s high in protein to make sure you’re hitting your daily levels, and high in fibre, which is an essential part

£8.99
New
Meal Replacement 4.4Kg Diet Shakes Slim Weight Loss Whey Protein Shake Powder
Plus, it’s high in protein to make sure you’re hitting your daily levels, and high in fibre, which is an essential part

£31.99
New
SlimFast Shakes Meal Replacement High Protein Diet Ready To Drink 6 X 325ml Pack
MULTIVITAMIN AND MINERAL POWERHOUSE: protein drinks with 23 vitamins and minerals (incl. Source: COMMISSION REGULATION (

£10.99
New
Meal Replacement Diet Shakes Slim Weight Loss Fast Whey Protein Shakes Powder
Plus, it’s high in protein to make sure you’re hitting your daily levels, and high in fibre, which is an essential part

£20.99
New
Cute Woman Meal Replacement 2 X 500g Diet Protein Slimming Shake and Shaker
SWEET TOOTH?. NO PROBLEM - Cut fatty and sugary snacks and treats from your diet with a healthy alternative. Protein - 1

£24.99

25 Diet Shakes deals are available from: Amazon, eBay stores, starting from £7.60.
The biggest discount we found is 31% on SlimFast Meal Replacement Shake for Weight Loss & Balanced Diet, Vitamins and Minerals, Low Calorie, High Protein, Chocolate Flavour, 16 servings, 600 g, Packaging May Vary at Amazon.
The lowest price we found is £7.60 while the highest is £45.00.
Prices for the best Diet Shakes deals average at £18.29.
Last updated on March 20, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Diet Shakes.