---
title: "40w Bayonet Light Bulbs — £19K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/lighting/40w-bayonet-light-bulbs"
last_updated: "2026-07-31T08:03:57.885Z"
locale: en
meta:
description: "Niche score 30/100 · £19K/yr market · 37K searches/yr · £6.21 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 30/100 · £19K/yr market · 37K searches/yr · £6.21 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "40w Bayonet Light Bulbs — £19K/yr Amazon UK Niche (2026) - Flapen"
---
# **40w bayonet light bulbs**
**Skip it**
Prices mostly outside the sweet spot ($4.72–$10.98) — this niche doesn't clear our bar today.
Market size 5Growth 2Conversion 80Competition 19Returns 87Price range 0Avg price 17Brand share 38Review moat 55Quality gap 24
**Returns**
**Great****1.4%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****8.2%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Good****1,285**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Okay****82%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
**Competition**
**Bad****77%**
top-5 click share — a locked-up shelf
**Avg price**
**Bad****£6.21**
avg listing price — sweet spot $15–$100
**Market size**
**Bad****£19K**
£19K/yr · 37K searches
**Growth**
**Bad****-46.3%**
90-day search growth — must beat 0% to launch
**Price range**
**Bad****£4.72–£10.98**
cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, 40w bayonet light bulbs is a £19K/yr Amazon United Kingdom market (37K searches/yr). The top 5 brands hold 82% of demand. Demand peaks in Jan–Feb–Oct–Nov–Dec. Verdict: Skip it — 30/100.
Data updated Jul 28, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **40w bayonet light bulbs market data**
- **Units sold / yr**
- **4K–5K**
- avg 250–500/product
- **Revenue / yr**
- **£25K–£31K**
- units × avg price
- **Conversion rate**
- **8.2%**
- **Avg BSR**
- **#865**
- **Page quality**
- **0%**
- **Prime**
- **92%**
- **Sponsored**
- **62%**
- **Out of stock**
- **13.6%**
- **Avg brand age**
- **47 months**
- **Avg seller age**
- **206 days**
## **Competition & brand share**
The top 5 products capture 77% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**10 **▼falling
**Sellers**
**34**
**Top-5 brand share**
**82%**
Top 20: 100%
**Top-5 click share**
**77%**
Top 20: 100%
**Open market**
**13%**
- Lepro39% - Linkind16% - EvaStary11% - Vanke9% - Energizer7% - HYLITE5% - Open — no brand owns it (4 brands, 13%)
## **Demand & seasonality**
Weekly Amazon search volume, last 84 weeks — -46.3% search growth over the last 90 days.
1K600Spike '25 seasonJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJunJul
Peak months: Jan, Feb, Oct, Nov, Dec · busiest ÷ quietest = 3.0×
[**Open Trend **](https://flapen.com/research/uk/lighting/40w-bayonet-light-bulbs/trend)
## **Top 40w bayonet light bulbs search terms**
- **40w bayonet light bulbs**12K/yr-56.6%8.4% conv. - **40 watt bayonet light bulbs**8K/yr-41.3%9.4% conv. - **bayonet light bulb 40w**4K/yr-43.0%13.0% conv. - **40w light bulbs**4K/yr-31.4%2.4% conv. - **light bulb 40w**4K/yr-48.4%6.7% conv. - **light bulbs bayonet 40w**3K/yr-37.1%11.9% conv. - **bayonet light bulb 40w warm white**2K/yr-39.6%16.0% conv. [**All search terms **](https://flapen.com/research/uk/lighting/40w-bayonet-light-bulbs/search-terms)
## **Top 40w bayonet light bulbs 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%10%£2K20%£4K30%£6K40%£8K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 13 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Lepro G45 Bayonet Light Bulb 4.9W=40W Warm White 2700K 470lm Pack of 6**Lepro**£7.64**4.6★3,455 rev](https://www.amazon.co.uk/dp/B01M7YQTEU) [2**Linkind Bayonet Light Bulb 40w Equivalent Warm White 2700K 4.9W 470lm B22d LED Bulbs G45 Golf Ball Energy Saving Bulbs Non-Dimmable 4 Pack**Linkind**£6.26**4.8★48 rev](https://www.amazon.co.uk/dp/B0DWT16JGX) [3**Bayonet Light Bulbs B22 LED Bulb Bayonet 40W Equivalent Warm White 4Pack**EvaStary**£5.93**4.5★323 rev](https://www.amazon.co.uk/dp/B0C2YKZW18) [4![Energizer Candle 4.5W 40W Replacement LED Bulb 4 Pack (Warm White B22) ENGS14331 [Energy Class F]](https://m.media-amazon.com/images/I/51F8kQVcfzL.jpg)**Energizer Candle 4.5W 40W Replacement LED Bulb 4 Pack (Warm White B22) ENGS14331 \[Energy Class F\]**Energizer**£5.34**4.6★348 rev](https://www.amazon.co.uk/dp/B07RTYF9QL) [5**Vanke B22 Candle Light Bulb 6W(40W Equivalent) Warm White 2700K 3-Pack**Vanke**£5.07**4.5★746 rev](https://www.amazon.co.uk/dp/B08P9PY1JH)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**HYLITE 4.9W G45 Low Energy LED Bulb 2 Pack - 450 Lumen Warm White 3000K Small Round Light - 40W Equivalent B22 Bayonet Cap - Energy Saving Instant Full Brightness No Flicker Long Life**HYLITE**£5.78**50 rev10mo ago](https://www.amazon.co.uk/dp/B0FPRNQZKL) [**PHILIPS B22 LED Light Bulb GLS 4.2W 470 Lumens Warm White 2700K 6 Pack**PHILIPS**£10.98**14 rev10mo ago](https://www.amazon.co.uk/dp/B0FPRPLWSP) [**Linkind Bayonet Light Bulb 40w Equivalent Warm White 2700K 4.9W 470lm B22d LED Bulbs G45 Golf Ball Energy Saving Bulbs Non-Dimmable 4 Pack**Linkind**£6.26**48 rev1y ago](https://www.amazon.co.uk/dp/B0DWT16JGX) [**Unibulb BC B22 Bayonet LED Light Bulb 470 Lumens 2700K Warm White Replaces 40W Non-Dimmable 25yr Lifespan Pack of 3**Unibulb**£5.98**85 rev1y ago](https://www.amazon.co.uk/dp/B0DVCD5XT1) [**Lepro Bayonet Light Bulb 8.5W=60W 806lm Warm White 2700K Pack of 3**Lepro**£5.37**9,168 rev2y ago](https://www.amazon.co.uk/dp/B0D5M7N5TK)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Linkind Bayonet Light Bulb 40w Equivalent Warm White 2700K 4.9W 470lm B22d LED Bulbs G45 Golf Ball Energy Saving Bulbs Non-Dimmable 4 Pack**Linkind**£6.26**4.8★**▲ 267%**](https://www.amazon.co.uk/dp/B0DWT16JGX) [**HYLITE 4.9W G45 Low Energy LED Bulb 2 Pack - 450 Lumen Warm White 3000K Small Round Light - 40W Equivalent B22 Bayonet Cap - Energy Saving Instant Full Brightness No Flicker Long Life**HYLITE**£5.78**4.7★**▲ 247%**](https://www.amazon.co.uk/dp/B0FPRNQZKL) [**MAXIM LED Round Bayonet Cap (Daylight White) - 5.5watt (40watt) - 470 Lumen (Pack 10) - 40MLRB22D5X10**Maxim**£7.16**5.0★**▲ 153%**](https://www.amazon.co.uk/dp/B0BHDKW7YF) [**PHILIPS B22 LED Light Bulb GLS 4.2W 470 Lumens Warm White 2700K 6 Pack**PHILIPS**£10.98**4.5★**▲ 124%**](https://www.amazon.co.uk/dp/B0FPRPLWSP) [**Lepro Bayonet Light Bulb 8.5W=60W 806lm Warm White 2700K Pack of 3**Lepro**£5.37**4.6★**▲ 50%**](https://www.amazon.co.uk/dp/B0D5M7N5TK)
**~~View all trending →~~**
## **What buyers say about 40w bayonet light bulbs**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Brightness/Shine/Glow**30%
*“provide a good light”*
**Advertised Vs Actual Product**18%
*“Just what I needed”*
**Value For Money**17%
*“Great value”*
**Quality-Overall**15%
*“arrived when expected, as described and good quality”*
**Bulb Flicker/Dimming/Color**5%
*“Its a pack of bulbs and they work”*
**Size-Overall**4%
*“They fit and they work”*
**Durability**2%
*“Lifespan seems good”*
**Efficiency**2%
*“works well”*
**Temperature Control**1%
*“Perfect brightness and temp”*
**Design-Overall**1%
*“Stylish, easy to assemble and delivered next day”*
### **What buyers complain about **
**Brightness/Shine/Glow**22%
*“Not very bright”*
**Durability**17%
*“Didnt last long”*
**Quality-Overall**11%
*“Poor product”*
**Color**11%
*“Not a warm white”*
**Bulb Flicker/Dimming/Color**6%
*“It is not dimmable so will not be used as touch light”*
**Value For Money**6%
*“Expensive mistake”*
**Warmth**6%
*“these ones barely gets warm”*
**Size-Overall**4%
*“The bulb is small”*
### **Top return reasons **
**Size-Overall**57%
**Color**9%
**Brightness/Shine/Glow**8%
**Functionality-Overall**7%
**Bulb Flicker/Dimming/Color**5%
**Compatibility-Overall**5%
**Advertised Vs Actual Product**2%
**Defective Material/Parts**1%
**Warmth**1%
**Mounting**0%
## **Common questions**
- **Is 40w bayonet light bulbs profitable to sell on Amazon United Kingdom?**
- The niche generates £19K/yr across 13 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -46.3%. Flapen's verdict: Skip it (30/100).
- **How competitive is the 40w bayonet light bulbs niche?**
- 10 brands and 34 sellers compete. The top 5 products take 77% of clicks and top 5 brands hold 82% of demand.
- **What do buyers complain about in 40w bayonet light bulbs?**
- Top complaints mined from reviews: Brightness/Shine/Glow, Durability, Quality-Overall. The return rate is 1.4%.
- **When does demand for 40w bayonet light bulbs peak?**
- Demand peaks in Jan–Feb–Oct–Nov–Dec; the busiest month runs 3.0× the quietest.
- **What does it cost to enter the 40w bayonet light bulbs niche?**
- Listings span £4.72–£10.98; the average listing price is £6.21 (sweet spot $15–$100). The average incumbent carries 1,285 reviews — the moat a new listing must climb.
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