Serious Whey
by The Bulk Protein Company
A trusted everyday protein: affordable, versatile, and designed to support your training goals with every shake.
- Up to 22g protein per serving
- For shakes, smoothies, baking and more
Size4kg
Best price today
In stock£44.99
£1.12 / 100g
Secure retailer checkout
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Transparent protein profile
What's inside
Values per 100g, with the amount in one 30g serving
72g protein
21.6g per 30g serving - solid protein content
10g carbohydrates
3g per 30g serving - low carb
5g fat
1.5g per 30g serving - moderate fat
380 kcal
114 kcal per 30g serving
View full nutritional information
| Nutrient | Per 100g | Per serving (30g) |
|---|---|---|
| Protein | 72g | 21.6g |
| Calories | 380 kcal | 114 kcal |
| Carbohydrates | 10g | 3g |
| Fat | 5g | 1.5g |
Know when to buy
Price history
Lowest price on record, any flavour or size
£1.12/100g (£44.99 for 4kg on 25 Sept 2026)
4kg · all flavours · price per pack
- Amazon UKlatest £44.99 (one check so far)
Quick answers
Is this right for you?
Who is it for?
The Bulk Protein Company Serious Whey is designed for gym-goers and strength trainers looking for an affordable, everyday protein source. Whey concentrate suits anyone who wants a solid protein boost without paying a premium for ultra-high purity. It works well as a post-workout shake or a between-meals top-up.
What can you expect?
A well-rounded protein powder that mixes easily and tastes good. Whey concentrate typically delivers 70-80% protein content with a natural, creamy texture. You will get a reliable source of all essential amino acids including BCAAs to support muscle recovery after training. With 72g of protein per 100g (around 22g per 30g serving), The Bulk Protein Company Serious Whey sits in a solid mid-range for a whey concentrate product.
What else do you need to know?
The Bulk Protein Company Serious Whey is a whey concentrate protein powder made by The Bulk Protein Company. It comes in 4kg sizes. Every price on WheyWise is read from the retailer’s own page and re-checked daily and sorted by cost per 100g, so you can see both the cheapest option and how current it is. All links to Amazon and retailer sites are affiliate links - this is how WheyWise stays free.
Frequently asked questions
Where is the cheapest place to buy The Bulk Protein Company Serious Whey in the UK?
The best price we have verified today is £1.12 per 100g for the 4kg bag, checked 25 Sept 2026. Use the buy button above to go straight to it.
How much protein does Serious Whey contain per 100g?
Serious Whey contains 72g of protein per 100g, with 21.6g per 30g serving. It is a whey concentrate product.
Is The Bulk Protein Company Serious Whey currently in stock?
At the last check, 1 out of 1 tracked variants was in stock. Stock status carries the same fetch time as the price shown above, so check the retailer listing before ordering.
Pick your pack
1 size · any flavour · cost per 100g for each
Where to buy in the UK
4kg · 1 offer for this selection · sorted by cost per 100g
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