---
title: "Fulfill Protein Bars — £1.3M/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/health-personal-care/fulfill-protein-bars"
last_updated: "2026-07-31T15:16:08.472Z"
locale: en
meta:
description: "Niche score 56/100 · £1.3M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 56/100 · £1.3M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Fulfill Protein Bars — £1.3M/yr Amazon UK Niche (2026) - Flapen"
---
# **fulfill protein bars**
**Worth a look**
Shows low returns (0.1%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 84Growth 24Conversion 76Competition 56Returns 100Price range 47Avg price 79Brand share 2Review moat 45Quality gap 50
**Returns**
**Incredible****0.1%**
return rate — above 5% kills the launch gate
**Market size**
**Great****£1.3M**
£1.3M/yr · 1.1M searches
**Avg price**
**Great****£16.55**
avg listing price — sweet spot $15–$100
**Conversion**
**Great****7.2%**
search→purchase rate — share of searches ending in a sale
**Competition**
**Good****51%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Good****4.5★**
avg incumbent rating — lower means beatable quality
**Price range**
**Okay****£2.33–£26.15**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Okay****1,986.11**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-2.5%**
90-day search growth — must beat 0% to launch
**Brand share**
**Bad****99%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United Kingdom niche tracking, fulfill protein bars is a £1.3M/yr Amazon United Kingdom market (1.1M searches/yr). The top 5 brands hold 99% of demand. Demand peaks in Jun–Jul. Verdict: Worth a look — 56/100.
Data updated Jul 24, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **fulfill protein bars market data**
- **Units sold / yr**
- **125K–150K**
- avg 4,000–5,000/product
- **Revenue / yr**
- **£2.1M–£2.5M**
- units × avg price
- **Conversion rate**
- **7.2%**
- **Avg BSR**
- **#30**
- **Page quality**
- **0%**
- **Prime**
- **89%**
- **Sponsored**
- **63%**
- **Out of stock**
- **2.6%**
- **Avg brand age**
- **53 months**
- **Avg seller age**
- **160 days**
## **Competition & brand share**
The top 5 products take 51% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**6 **▼falling
**Sellers**
**116**
**Top-5 brand share**
**99%**
Top 20: 100%
**Top-5 click share**
**51%**
Top 20: 92%
**Open market**
**0%**
- Grenade80% - Fulfil14% - Warrior3% - Grenade Carb Killa2% - Snickers1% - Chiefs1% - Open — no brand owns it (0%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -2.5% search growth over the last 90 days.
45K35KSpike '24Spike '25Prime Day '25Black Friday '25Spike '26Prime Day '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jun, Jul · busiest ÷ quietest = 8.6×
[**Open Trend **](https://flapen.com/research/uk/health-personal-care/fulfill-protein-bars/trend)
## **Top fulfill protein bars search terms**
- **grenade protein bars**646K/yr-1.9%8.5% conv. - **fulfil protein bars**114K/yr+3.2%6.0% conv. - **grenade**114K/yr-10.9%4.9% conv. - **grenade bars**76K/yr-14.5%7.2% conv. - **protein bars grenade**22K/yr+14.5%5.4% conv. - **fulfill protein bars**23K/yr+10.6%5.0% conv. - **grenade bar**17K/yr-7.6%6.1% conv. - **fulfil**17K/yr-7.1%5.9% conv. - **grenade protein**17K/yr-15.7%1.9% conv. - **grenade bars protein**10K/yr+26.5%6.7% conv. [**All search terms **](https://flapen.com/research/uk/health-personal-care/fulfill-protein-bars/search-terms)
## **Top fulfill protein bars products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%5%£67K10%£135K15%£202K20%£269K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Grenade High Protein Low Sugar Bar - Chocolate Chip Salted Caramel 12 x 60 g**Grenade**£16.11**4.6★3,992 rev](https://www.amazon.co.uk/dp/B084ZGV3Y7) [2**Grenade OREO White - High Protein Low Sugar Bars 12 x 60 g**Grenade**£14.13**4.5★1,993 rev](https://www.amazon.co.uk/dp/B0CGDWCLGY) [3**FULFIL Vitamin and Protein Bars Chocolate Salted Caramel Flavour 15 x 55g**Fulfil**£21.06**4.7★1,961 rev](https://www.amazon.co.uk/dp/B07HWHNMHP) [4**Grenade OREO - High Protein Low Sugar Bars 12 x 60 g**Grenade**£14.54**4.4★4,005 rev](https://www.amazon.co.uk/dp/B0BS49D1G5) [5**Grenade Limited Edition Creme Egg Flavour Soft Core Protein Bar - High Protein Low Sugar 18 x 45 g**Grenade**£18.05**4.4★304 rev](https://www.amazon.co.uk/dp/B0G49Z9J48)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Grenade Limited Edition Creme Egg Flavour Soft Core Protein Bar - High Protein Low Sugar 18 x 45 g**Grenade**£18.05**304 rev7mo ago](https://www.amazon.co.uk/dp/B0G49Z9J48) [**Snickers HiProtein Bars Dark Chocolate 20g Protein Only 1g Sugar 12×57g Multipack Low Sugar High Protein Snack**Snickers**£17.86**200 rev2y ago](https://www.amazon.co.uk/dp/B0D84BF4TN) [**Grenade High Protein Low Sugar Bar - Fan Favourites Selection Box Protein Bars 10 x 60 g (Packaging May Vary)**Grenade**£14.62**188 rev2y ago](https://www.amazon.co.uk/dp/B0CXTDGWX9) [**Grenade OREO White - High Protein Low Sugar Bars 12 x 60 g**Grenade**£14.13**1,993 rev2y ago](https://www.amazon.co.uk/dp/B0CGDWCLGY) [**Grenade Protein Bar - Pick any 12 Protein Bars from Birthday Cake Cookie Dough Salted Caramel Fudged up Peanut Nutter Salted Peanut Dark Chocolate Mint & More. High Protein & Fibre and Low Sugar**Grenade Carb Killa**£26.15**64 rev2y ago](https://www.amazon.co.uk/dp/B0CD7YR4G2)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Grenade Protein Bar - Pick any 12 Protein Bars from Birthday Cake Cookie Dough Salted Caramel Fudged up Peanut Nutter Salted Peanut Dark Chocolate Mint & More. High Protein & Fibre and Low Sugar**Grenade Carb Killa**£26.15**4.6★**▲ 134%**](https://www.amazon.co.uk/dp/B0CD7YR4G2) [**Warrior RAW Protein Bars 12 x 75g 20g High Protein Bar Low Sugar High Fibre Oat Protein Flapjack Protein Snacks Meal Replacement Bars (Chocolate Brownie)**Warrior**£9.31**3.9★**▲ 108%**](https://www.amazon.co.uk/dp/B07F6SVZW9) [**Grenade High Protein Low Sugar Bar - Fan Favourites Selection Box Protein Bars 10 x 60 g (Packaging May Vary)**Grenade**£14.62**4.5★**▲ 102%**](https://www.amazon.co.uk/dp/B0CXTDGWX9) [**Grenade Limited Edition Creme Egg Flavour Soft Core Protein Bar - High Protein Low Sugar 18 x 45 g**Grenade**£18.05**4.4★**▲ 93%**](https://www.amazon.co.uk/dp/B0G49Z9J48) [**Grenade Selection Box - High Protein Low Sugar Bars 12 x 60 g Variety Pack (Packaging & Flavours May Vary)**Grenade**£16.30**4.6★**▲ 90%**](https://www.amazon.co.uk/dp/B07DDYDP57)
**~~View all trending →~~**
## **What buyers say about fulfill protein bars**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Taste-Overall**33%
*“Absolutely delicious”*
**Nutritional Content**19%
*“Great Protein Bars”*
**Value For Money**9%
*“Value for the money”*
**Flavor**8%
*“Great tasting bars”*
**Quality-Overall**7%
*“Great value for the quality”*
**Sweetness**3%
*“Really nice sweet”*
**Texture/Consistency-Overall**2%
*“What I love most is the consistency”*
**Size-Overall**1%
*“Good size”*
**Blood Sugar Level**1%
*“Best to avoid for diabetics”*
**Weight Loss**1%
*“Great when Im trying to lose weight”*
### **What buyers complain about **
**Taste-Overall**20%
*“Soap taste”*
**Value For Money**6%
*“More expensive for less”*
**Advertised Vs Actual Product**5%
*“Not mentioned anywhere in the advertising”*
**Flavor**5%
*“taste is slightly chalky”*
**Sweetness**5%
*“Sickly sweet”*
**Nutritional Content**5%
*“what you fail to mention is the 9.4gr of saturated fat”*
**Texture/Consistency-Overall**4%
*“texture is off”*
**Vegan/Organic**4%
*“I nearly purchased this without realised that it contained Halal bovine collagen”*
**Moist/Dry**4%
*“they are really dry and chewy”*
**Ease Of Chewing/Swallowing**3%
*“it's a struggle to swallow it”*
### **Top return reasons **
**Taste-Overall**67%
**Size-Overall**33%
## **Common questions**
- **Is fulfill protein bars profitable to sell on Amazon United Kingdom?**
- The niche generates £1.3M/yr across 27 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -2.5%. Flapen's verdict: Worth a look (56/100).
- **How competitive is the fulfill protein bars niche?**
- 6 brands and 116 sellers compete. The top 5 products take 51% of clicks and top 5 brands hold 99% of demand.
- **What do buyers complain about in fulfill protein bars?**
- Top complaints mined from reviews: Taste-Overall, Value For Money, Advertised Vs Actual Product. The return rate is 0.1%.
- **When does demand for fulfill protein bars peak?**
- Demand peaks in Jun–Jul; the busiest month runs 8.6× the quietest.
- **What does it cost to enter the fulfill protein bars niche?**
- Listings span £2.33–£26.15; the average listing price is £16.55 (sweet spot $15–$100). The average incumbent carries 1,986 reviews — the moat a new listing must climb.
## **Related niches in Health & Personal Care**
- 69 [**cooling towel**](https://flapen.com/research/uk/health-personal-care/cooling-towel)£1.1M/yr>1,000%**Launch it**- 70 [**collagen**](https://flapen.com/research/uk/health-personal-care/collagen)£6.6M/yr-20.1%**Worth a look**- 70 [**dry skin remover feet**](https://flapen.com/research/uk/health-personal-care/dry-skin-remover-feet)£236K/yr+78.2%**Worth a look**- 70 [**stryde knee strap**](https://flapen.com/research/uk/health-personal-care/stryde-knee-strap)£112K/yr>1,000%**Worth a look**- 70 [**libre 2 sensor covers**](https://flapen.com/research/uk/health-personal-care/libre-2-sensor-covers)£240K/yr+67.1%**Worth a look**- 70 [**water retention tablets**](https://flapen.com/research/uk/health-personal-care/water-retention-tablets)£470K/yr+47.2%**Worth a look**[**All Health & Personal Care niches **](https://flapen.com/research/uk/health-personal-care)