SiS (Science in Sport) Deals

SiS (Science in Sport) Deals & Offers

11 hot deals

All SiS (Science in Sport) Deals, Discounts & Sales for July 2018

Try the new SiS gels: Vanilla, Fruit Salad and Salted Caramel (£3.99p+p / Free with premier)
Refreshed 13th JulRefreshed 13th Jul
SiS launched some new flavours: Vanilla, Fruit Salad and Salted Caramel. You can get 3 of each flavour for free. £3.99 standard postage. Free delivery with Premier.

Had a Fruit Salad one yesterday after a 5mile race...lovely !!


Free potassium sorbate shot hot (excited)


Just done same. Thanks for info


They cost next to nothing to make


Thanks, ordered

Offer Stack when you spend £10 - Free Pink SKY Bottle + choose another free gift @ SiS
Found 5th JulFound 5th Jul
Steps to get this stacking 1. Add items to your basket so it's £10 over over. 2. Go to or view your basket and the free bottle gift will pop up, if not then there will be a small … Read more

You should post that voucher code as your own deal. The free bottle offer is gone now so this deal is expired.


i am not sure whether you get the additional free gift with this code but you do certainly get the free bottle offer 25% off SISCP25


Just ordered three tubes of hydration tablets (£15) free delivery, free bottle and free pack 😁


The only other code that works for me at the moment is FUEL-ME but you can only use 1 code at a time and the Football one has better value gifts right now. There may be other codes in future or the free bottle offer could disappear at any time at which point this deal will expire.


Endurance nutrition. SiS - £14.00 down to £9.80  (free delivery £10 / £3.99)
Found 4th JulFound 4th Jul
Endurance nutrition. SiS - £14.00 down to £9.80 (free delivery £10 / £3.99) 30% Off sports nutrition pack at SiS - Science in sport Pack contents Contains assorted flavours :… Read more
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Don't know the official figures but I do get a fairly quick boost from a banana - Or maybe its in my head - whichever it still seems to work :D


Lol on this site is tricky to distinguish the genuine questions... The ones I've tried from SIS contain maltodextrin. Allegedly better than glucose but tbh little different in terms of metabolism


Lol, I know that, just wondering if it's bad sugar eg glucose or something. Want it for the gym but not if it's detrimental


Of corse, your body needs sugars, but it's not the same sugar you can get at Tesco...


Yeah they are good to keep on you for emergencies but the only downside is I cannot seem to avoid getting the gel on my handlebars and brake levers.... Sticky :(

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SiS Giro bundle £1 + £3.99 Delivery @ SiS
Found 27th JunFound 27th Jun
SIS bundle for '£1' with voucher code. Free delivery for premier. voucher code makes bundle free
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Now removed by the looks of it. Shame as I needed a new bottle.


I managed to get this one before going to bed last night at £3.99. I was just about to replace my old SiS bottle and was expecting to pay around £4-5 anyway so some free gels and bars are a bonus.


Nor me...Getting a ''404 page not found''


Link not working for me


Damn, think I missed this one :(

Spend £10 and enter code FOOTBALL18 to get a free bundle
Found 17th JunFound 17th Jun
Follow these steps for your free cup bundle: 1. Place any order over £10 2. Use code: FOOTBALL18 in checkout 3. Choose your free bundle There seems to be 6 different bund… Read more

I think the new sign up deals are gone, before hand you used to get 500 points. There is something on their site about getting 500 points for being refered by another person but I have not tried it so I cant confirm if it works (500 points would be £5 off, so you could get Premier for £4.99 instead of £9.99) I paid for delivery for each order individually a few times but its £3.99 a pop so I just got Premier and get them all included as part of that now for a year


Not used them yet, but seen lots of deals and mention of premier etc. What's the best process to go through as a new customer to get the best deal? I've just signed up to their newsletter but haven't received anything from that. Do you sign up to premier when you buy something?


£10 off orders over £40 with code: JUNE-10

SIS Great run pack for £1 + £3.99 del
Found 6th JunFound 6th Jun
Contains: X1 800ml Yellow Bottle X1 Hyrdo Tablets Berry X1 Blueberry Bar Mini X1 Red Berry+ Caffeine Mini Bar X6 Cherry Iso pack
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Missed it, out of stock now. Can’t add to basket. Shame


Horrible delivery service. I ordered one of these packs couple of months ago and they dropped the pack in front of my door. The tracker said "delivered and signed by customer". Lucky me nobody stole it.


Great deal


Signed up with premier delivery, my boots will be filled over the next 12 months. Thanks.


great find thanks

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Football Protein Pack for £1 instead of £10 from SIS (£3.99 Del or Free Del if you have Premier) @ SiS
Found 29th MayFound 29th May
Football Protein Pack for £1 instead of £10. £3.99 delivery, however if you have Premier then you will get free delivery WHEY20 Strawberry 78ml 1 x WHEY20 78ml - Strawberry - … Read more

Its in stock again at the moment


OOS now


Great deal ordered


It's a steal, cheers for this


Worked for me. Have to keep going back in it’s it’s listed as out of stock as it eventually come back. Same with most of the hot deals here

Any 6 pack of Go isotonic energy gels FREE - premier delivery or £3.99 @ SiS
Found 19th MayFound 19th May
Add any 6 pack of Go isotonic gels to your basket, can be any flavour of your choice. In the basket simply enter the promo code to get your 100% off discount. If you have a premier… Read more

Not sure if something has changed in how they apply these codes, but with an existing account and Premier paid for already in a previous order, there seemed to be no way to get the 6 gels completely free - was only allowed to add the freebie with another purchased item.


Doesn’t work...signed up and selected news letter and 0 points shown in my account. Unless I’m doing something wrong...


Thanks victor99, much appreciated. The seas of confusion have parted! (y)


'OP: Where is the evidence for the £5 credit with new account sign-ups getting premiere for £4.99?? It says it on this page


Register and you get 250 points which is £2.50, go into settings and sign up to the news letter for another 250 points, thats £5. Premier is 9.99, so you are going to get it for £4.99.

+ANOTHER 12x FREE energy gels + p&p for £3.99 (completely FREE with premier)
Found 19th MayFound 19th May
I know this may similar to the deal posted a few days ago but you can get ANOTHER 12 free gels with this code. I have successfully claimed the 24(2x12) FREE gels already posted on … Read more

With help from victor on UKHD (info *all* staff failed to provide when asked!) The extra 250 comes from signing up for the newsletter. EDIT: So after effectively wasting all this time, getting the newsletter and communicating with the clueless staff.. *and* paying £5 for 'free' delivery of my 'free' item the code is not working and they want £19.40 for the gels meaning a total of £24.40 spent if I follow this. Message is: "COUPON CODE IS NOT VALID" So will 'attempt' to go through the long queues and to try and my money back.


When I’ve done it recently there was 500 points waiting for me at checkout which definitely equates to £5 off premium and an extra freebie item.


Could I please ask for clarification of the above claims. Customer service are saying they don't know anything about free £5 credit with Premier and a new account - Last one (Maria) I specifically asked about free £5 credit with new account and premiere answered that with a new account £9.99 get's you a year delivery and that's it. Is there a link to the info about the apparent free £5 credit because I can't find anything and chat staff are none the wiser. Edit: I spoke to another member of SIS chat staff (Benadetta) and was told the same (no extras besides delivery regardless of new account) then I questioned her again and she changed her story and said you get 250 points for a new account.. which say says would be worth approx £2.50 credit although I don't know what the requirements are re: minimum points cash out or conditions etc. 'OP: Where is the evidence for the £5 credit with new account sign-ups getting premiere for £4.99?? Apologies if I've missed something but if these chat staff are correct then a lot of UKHD readers will be disappointed paying £10 expecting to get premiere for effective £5 due to this imaginary(?) credit you claim. This is a big money spinner for SIS.. are you affiliated with them or taking handouts? - Details seem shady, I nearly dropped £10 expecting my £5 credit but staff say that's nonsense. Apologies again if I've missed something.. very possible! Cheers All :D


Working again now


In stock now :D

Another 12 SiS energy gels for p&p / free with code
Found 10th MayFound 10th May
I've just claimed another 12 free gels from Science in Sport. This code worked for me even though I've used similar before. P&P is free if you are a premier member or on order… Read more

Still think this is available.


Top Man boffin :) keep em coming..


And six more for free with 40p reward points (y)


Awesome deal, have two accounts with premier delivery so that means another 24 gels FREE! I found another deal, choose any 6 pack isotonic gel of your choice for FREE(just pay P&P or free with premier), code: FUEL-ME


Free gels plus a free bottle, nice! I got offered their premier membership for half price on one of my previous orders and it's definitely paid for itself! I have no idea how their discounts work though! I also ordered some of the Hydro tablets, 3 for £10 using the code HYDRO. Had to do a separate order for that but someone the discount changed twice so I ended up getting the 3 tubes plus another free bottle for £5.80! Chrome wasn't working for me during checkout so I tried Edge which was able to complete the orders OK.

12 Free Science in Sport Energy Gels (usually £19.40) Only Pay P&P £3.99 - Free to Premier Account Members
Found 10th MarFound 10th Mar
So I know it’s only been 2 minutes since my last SIS deal but this seemed equally good if not better. This time get this pack free (… Read more
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This weekend you can also get 6 free gels as well as the performance pack so a great deal for only £4.99!


Still works, just got a pack of gels, +250 points for email sign up. Total £1.49 delivered. Sweet.


Thanks for that I’ll give it a go!


If you use strava and sign up and complete the aussie versus UK challenge (just log one ride!) Then you will get a code for 12 free gels....


See if this one works for you. I can’t as I’ve already claimed

Match Day Fuel Pack - Science in Sport - £2.99 p&p
Found 2nd MarFound 2nd Mar
Takes you to the Man United website but you don't need to be a member/fan/associate,-d-,5-mill… Read more

Looks like already posted as ?


Thanks - I'm a SiS premier customer so P&P was free too.

Free Science in Sport Match Day Fuel Pack (usually £15.50) just pay £2.99p&p
Found 2nd MarFound 2nd Mar
Simply enter your details and get a code to discount the pack to free of charge. Only pay £2.99 postage. Each pack contains: 3 x GO Isotonic Energy Gels 1 x GO Energy & … Read more
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I can’t actually remember. Try both options.But now I’m a premier account holder I get free delivery on other free offers like the 12 free gels I posted on another link


Did you use a different email/credit card/address when making another order?


All this for £5!!


If you just add the premier account as an item to your basket it’ll automatically give you the free pack so you’ll get two decent packs and some caffeine shots for £5 plus newsletter points.


Thanks :) It pops up when I add a different product but after I remove that product, the 2 free shots get removed too :( Oh well, I'll leave the tab open for a while and see if anything pops up.

SIS Hydration Bundle 50% off - £13.99 + £3.99 delivery  at
Found 26th FebFound 26th Feb
I swear by SIS as a whole and good to get 50% off. I've used the Sports Direct ones which can be cheaper but they dont have the same effect. Choose From: GO Hydro - 20 Tabs (Be… Read more

ah thanks i'll check them out,


I prefer SIS for their gels, rego and electrolyte powders. For Energy Bars , definitely Cliff bars (peanut butter flavour)


Give these ago too I think its the same "chef" from SIS who set up his own business.


tablets i guess are very similiar and its personal taste, i dont mind the high5 gels, a bit sickly, some flavours of sis are good, others terrible for me. my favourite recently have been the powerbar gel satchets the vanilla and the strawberry/banana are like rocket fuel,,


HiFive are good for the price TBH but still prefer SIS personally, especially the energy bars/gels.

Free _ GO Isotonic Energy Gels
Found 12th Dec 2017Found 12th Dec 2017
GO Isotonic Energy Gels

Mine arrived today! Fake name and telephone number just in case of course


Thanks!! i had delivery today! dont remember when I did order,but it arrived! (party) will have a go for tomorrow! (flirt)


Many Thanks. I received them today



Mine came today, good service

SiS GO Isotonic Energy Gel - 20 Pack £9.99 Next Day Delivered including & unlimited UK Next Day Delivery for a full year SIS
Found 25th May 2017Found 25th May 2017
Subscribe to SiS Premier and receive: SiS GO Isotonic Energy Gel - 20 Pack (Choice of Flavour). Simply add to basket and Select SIS Premium Delivery £9.99 and £28 comes off order… Read more

Brilliant, thanks. I signed up for the newsletter so got £5 off another order. 20 gels and 80 hydration tabs (£15 less the £5 for subscribing) for £20 total :)


Great, thanks

SiS Energy Pack - New Members £3.99 @ SiS
Found 4th May 2017Found 4th May 2017
Science in Sport (SiS) are offering a promotion for a free Energy Pack (worth £17) for new members but you need to pay the delivery of £3.99. May come in handy for someone, just r… Read more
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Can't see the offer because, as usual, their site is struggling. Jesus Christ SiS - SCALE (especially when you mail out a promo).