3 best Amazon Prime Day protein deals: up to 50% off SlimFast, Bulk Powders & Protein World

We're into the last 12 hours, but the Prime Day deals keep on coming! And if you're looking for protein powder deals then you've come to the right place.

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All manner of protein-related buys are marked down right now, from bumper-sized protein shake tins to lunchbox-friendly protein bars. And three deals in particular have caught our eye on some of the best protein powders on the market.

• See all protein powder and protein bar deals - up to 50% in Amazon Prime Day

They include the ever-popular Slimfast High Protein Meal Replacement Shake Powder in a 50-servings tin - currently reduced by 45% to just £16.49! Other great deals include Bulk Powders 1kg Pure Whey Protein Powder Shake (currently 50% off) and The Protein Works Vegan Wondershake at under £20 for 30 servings.

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Top Prime Day Protein Powder Deals

SlimFast Meal Replacement Powder Shake 50 Servings | On sale at £16.49 | RRP £29.99 | Saving you £13.50 at Amazon

There's a reason that SlimFast's meal replacement shakes are so popular: when it comes to weight loss, for many people they work. If you've been using them as part of SlimFast's 3.2.1 plan, now's the perfect time to stock up your supplies. There are two flavours available in the Prime Day deal: Chunky Chocolate and Simply Vanilla. Add to basket now!

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Bulk Powders Pure Whey Protein Powder Shake 1kg | On sale at £10.99 | Usually £21.99 | Saving you £11 at Amazon

Premium protein brand Bulk Powders are a favourite amongst many, which is just one reason that this is such a top Prime Day deal.  Produced right here in the UK, it contains an impressive 80% pure whey protein, making it great for muscle growth and the maintenance of muscle mass. A full range of flavours are available (everything from Peaches and Cream to Birthday Cake), so your favourite is sure to be available.

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The Protein Works Vegan Wondershake 30 Servings | On sale at £19.99 | Usually £37.99 | Saving you £18 at Amazon

Vegan protein powders have come a long way, and this one is a great example: it's high in protein (85%), low on sugar, virtually fat free and above all, has an acceptable taste. Not just acceptable: it actually tastes good, especially in comparison to some other popular vegan meal replacement products. What's more, there are eight flavours available.

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Amazon Prime Day alternative sales – UK

• Argos.co.uk – cheap Lego, toys, phones and more
• AO.com – huge sale on electrical appliances
• Currys.co.uk – clearance sale is live now
• Dell.co.uk – big savings on laptops and desktop PCs
• eBay.co.uk – knock-down prices and voucher codes
• Very.co.uk  – deals on electricals, fashion and home
• Lovehoney.co.uk – discounted sex toys and lingerie
• Goldsmiths.co.uk – savings on watches and jewellery
• John Lewis – great savings plus the John Lewis guarantee
• Le Creuset – premium cookware gets tasty discounts
• Nike  – new sneakers at sneaky low prices
• ASOS – big savings on clothes
• Schuh – save big on shoes, boots and trainers
• The White Company – quality bedding at reduced prices
• Simba – save big on mattresses and sleep bundles