---
title: "Japanese — £408K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/grocery/japanese"
last_updated: "2026-07-31T21:48:30.263Z"
locale: en
meta:
description: "Niche score 36/100 · £408K/yr market · 852K searches/yr · £9.42 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 36/100 · £408K/yr market · 852K searches/yr · £9.42 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Japanese — £408K/yr Amazon UK Niche (2026) - Flapen"
---
# **japanese**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 56Growth 17Conversion 59Competition 11Returns 100Price range 10Avg price 29Brand share 0Review moat 46Quality gap 37
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Good****5.1%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Good****£408K**
£408K/yr · 852K searches
**Review moat**
**Okay****1,932.67**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Okay****£9.42**
avg listing price — sweet spot $15–$100
**Growth**
**Bad****-15.7%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****86%**
top-5 click share — a locked-up shelf
**Price range**
**Bad****£3.63–£16.20**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United Kingdom niche tracking, japanese is a £408K/yr Amazon United Kingdom market (852K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Nov–Dec. Verdict: Skip it — 36/100.
Data updated Jul 24, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **japanese market data**
- **Units sold / yr**
- **40K–50K**
- avg 1,500–2,000/product
- **Revenue / yr**
- **£377K–£471K**
- units × avg price
- **Conversion rate**
- **5.1%**
- **Avg BSR**
- **#247**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **44%**
- **Out of stock**
- **2.1%**
- **Avg brand age**
- **46 months**
- **Avg seller age**
- **170 days**
## **Competition & brand share**
The top 5 products capture 86% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**4 **▲rising
**Sellers**
**32**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**86%**
Top 20: 100%
**Open market**
**0%**
- Kewpie87% - London Grocery6% - Sock Affairs5% - SUSHICANDY The Sweet taste of Japan2% - Open — no brand owns it (0%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -15.7% search growth over the last 90 days.
40K30KSpike '24Holiday '24Spike '25Prime Day '25Holiday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Nov, Dec · busiest ÷ quietest = 5.0×
[**Open Trend **](https://flapen.com/research/uk/grocery/japanese/trend)
## **Top japanese search terms**
- **japanese**289K/yr-12.3%0.1% conv. - **kewpie mayo**130K/yr-26.0%14.3% conv. - **japanese gifts**254K/yr-11.3%0.1% conv. - **japanese food**70K/yr-22.3%0.1% conv. - **kewpie**27K/yr-10.7%10.0% conv. - **kewpie mayonnaise**15K/yr+15.8%12.2% conv. - **japanese mayonnaise**16K/yr-17.3%12.1% conv. - **japanese gifts for men**31K/yr-1.6%0.2% conv. - **japanese mayo**8K/yr-20.4%11.2% conv. - **japan gifts**11K/yr-14.3%0.1% conv. [**All search terms **](https://flapen.com/research/uk/grocery/japanese/search-terms)
## **Top japanese 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%15%£61K30%£122K45%£183K60%£245K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 9 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Kewpie Mayonnaise 355ml | Authentic Japanese Mayo | Rich Umami Flavour | No MSG & Gluten-Free**Kewpie**£4.48**4.6★859 rev](https://www.amazon.co.uk/dp/B0BN2BCNJR) [2**Kewpie Mayonnaise 450g | Rich Umami-Packed Japanese Mayo**Kewpie**£5.44**4.7★6,095 rev](https://www.amazon.co.uk/dp/B00G6AGBLA) [3**Kewpie Mayonnaise 450g (Pack of 2) | Rich Umami-Packed Japanese Mayo**Kewpie**£11.59**4.7★6,095 rev](https://www.amazon.co.uk/dp/B003TJATBY) [4**Kewpie Mayonnaise 350ml**Kewpie**£6.18**4.5★1,628 rev](https://www.amazon.co.uk/dp/B07BFKL99K) [5**Kenko Japanese Mayonnaise 500g**London Grocery**£3.63**4.6★205 rev](https://www.amazon.co.uk/dp/B01IRM7DJ8)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Kewpie Mayonnaise 2400ml**Kewpie**£15.46**43 rev1y ago](https://www.amazon.co.uk/dp/B0C65D5HGX) [**Sock Affairs Japanese Art Socks Collection Great Wave of Kanagawa Ramen Sushi Carps Swimming Cancel My Subscription Gifts for Art Lovers Cotton Socks 2 Sizes 4-7 and 7-11**Sock Affairs**£9.09**81 rev2y ago](https://www.amazon.co.uk/dp/B0CB6XMMLP) [**Kewpie Mayonnaise 355ml | Authentic Japanese Mayo | Rich Umami Flavour | No MSG & Gluten-Free**Kewpie**£4.48**859 rev3y ago](https://www.amazon.co.uk/dp/B0BN2BCNJR) [**Kewpie Mayonnaise 15.87oz/450g (3 Pack)**Kewpie**£16.20**62 rev7y ago](https://www.amazon.co.uk/dp/B07M9WN9JH) [**Kewpie Mayonnaise 350ml**Kewpie**£6.18**1,628 rev8y ago](https://www.amazon.co.uk/dp/B07BFKL99K)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Sock Affairs Japanese Art Socks Collection Great Wave of Kanagawa Ramen Sushi Carps Swimming Cancel My Subscription Gifts for Art Lovers Cotton Socks 2 Sizes 4-7 and 7-11**Sock Affairs**£9.09**4.7★**▲ 281%**](https://www.amazon.co.uk/dp/B0CB6XMMLP) [**Kewpie Mayonnaise 355ml | Authentic Japanese Mayo | Rich Umami Flavour | No MSG & Gluten-Free**Kewpie**£4.48**4.6★**▲ 71%**](https://www.amazon.co.uk/dp/B0BN2BCNJR) [**Kewpie Mayonnaise 450g (Pack of 2) | Rich Umami-Packed Japanese Mayo**Kewpie**£11.59**4.7★**▲ 65%**](https://www.amazon.co.uk/dp/B003TJATBY) [**Kenko Japanese Mayonnaise 500g**London Grocery**£3.63**4.6★**▲ 24%**](https://www.amazon.co.uk/dp/B01IRM7DJ8) [**Kewpie Mayonnaise 2400ml**Kewpie**£15.46**4.1★**▲ 17%**](https://www.amazon.co.uk/dp/B0C65D5HGX)
**~~View all trending →~~**
## **What buyers say about japanese**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Taste-Overall**46%
*“Fantastic taste”*
**Flavor**12%
*“this has depths of flavour”*
**Value For Money**10%
*“Worth, every penny”*
**Gifting Purpose**4%
*“A unique gift”*
**Quality-Overall**3%
*“the high-quality ingredients”*
**Size-Overall**3%
*“theres a variety to fit anyone”*
**Texture/Consistency-Overall**2%
*“Creamy”*
**Sweetness**2%
*“a very assortment of sweets”*
**Thickness**2%
*“Great taste, thick and tasty”*
**Advertised Vs Actual Product**1%
*“Exactly what I ordered”*
### **What buyers complain about **
**Value For Money**29%
*“Just wish it was a bit cheaper”*
**Taste-Overall**15%
*“Tastes like salad cream”*
**Size-Overall**12%
*“Tiny box”*
**Salt Content**7%
*“It is saltier”*
**Thickness**5%
*“It's much thicker”*
**Stale/Rotten/Spoiled**3%
*“Stale and small”*
**Dilute/Watery**2%
*“viscous as hellmans”*
**Ingredients-Overall**2%
*“They have completely different ingredients”*
**Allergies**2%
*“Which I found unusual because surely people with allergies need to know that information”*
**Flavor**1%
*“off with little flavour”*
### **Top return reasons **
**Advertised Vs Actual Product**100%
## **Common questions**
- **Is japanese profitable to sell on Amazon United Kingdom?**
- The niche generates £408K/yr across 9 tracked products. 90-day search growth is -15.7%. Flapen's verdict: Skip it (36/100).
- **How competitive is the japanese niche?**
- 4 brands and 32 sellers compete. The top 5 products take 86% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in japanese?**
- Top complaints mined from reviews: Value For Money, Taste-Overall, Size-Overall. The return rate is 0.0%.
- **When does demand for japanese peak?**
- Demand peaks in Nov–Dec; the busiest month runs 5.0× the quietest.
- **What does it cost to enter the japanese niche?**
- Listings span £3.63–£16.20; the average listing price is £9.42 (sweet spot $15–$100). The average incumbent carries 1,933 reviews — the moat a new listing must climb.
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