---
title: "Door Lock — £510K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/baby-products/door-lock"
last_updated: "2026-07-21T11:43:23.464Z"
locale: en
meta:
description: "Niche score 61/100 · £510K/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 61/100 · £510K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Door Lock — £510K/yr Amazon UK Niche (2026) - Flapen"
---
# **door lock**
**Worth a look**
Shows no brand lock-in (top 5 brands take 39% of clicks), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 60Growth 24Conversion 36Competition 76Returns 78Price range 62Avg price 35Brand share 95Review moat 63Quality gap 77
**Brand share**
**Incredible****39%**
top-5 brand share — no brand owns this niche
**Returns**
**Great****1.9%**
return rate — above 6% kills the launch gate
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Competition**
**Great****39%**
top-5 click share — an open shelf
**Review moat**
**Good****986.61**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Good****£2.90–£34.83**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Good****£510K**
£510K/yr · 1.7M searches
**Conversion**
**Okay****2.9%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Okay****£10.24**
avg listing price — sweet spot $15–$100
**Growth**
**Bad****-2.6%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United Kingdom niche tracking, door lock is a £510K/yr Amazon United Kingdom market (1.7M searches/yr). The top 5 brands hold 39% of demand. Verdict: Worth a look — 61/100.
Data updated Jul 18, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **door lock market data**
- **Units sold / yr**
- **50K–60K**
- avg 1,250–1,500/product
- **Revenue / yr**
- **£512K–£614K**
- units × avg price
- **Launch success**
- **17%**
- 1 of 6 new (360d)
- **Conversion rate**
- **2.9%**
- **Avg BSR**
- **#62**
- **Page quality**
- **0%**
- **Prime**
- **98%**
- **Sponsored**
- **93%**
- **Out of stock**
- **10.9%**
- **Avg brand age**
- **29 months**
- **Avg seller age**
- **167 days**
## **Competition & brand share**
Clicks spread well past the top 5 (39% combined) — an open shelf where new products get seen.
**Brands**
**38 **▲rising
**Sellers**
**73**
**Top-5 brand share**
**39%**
Top 20: 86%
**Top-5 click share**
**39%**
Top 20: 83%
**Open market**
**56%**
- JelKen11% - moonybaby9% - RAV38% - All-Pie7% - Movstriker5% - QWORK5%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -2.6% search growth over the last 90 days.
35K25K seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.2×
[**Open Trend **](https://flapen.com/research/uk/baby-products/door-lock/trend)
## **Top door lock search terms**
- **door lock**680K/yr-4.6%2.1% conv. - **door locks for bedrooms**107K/yr+87.7%2.7% conv. - **bedroom door lock**135K/yr-2.0%2.4% conv. - **door locks**115K/yr-5.3%1.6% conv. - **door lock without drilling**137K/yr-44.6%2.1% conv. - **door handle lock**75K/yr-6.8%2.6% conv. - **lock for bedroom door**62K/yr-0.3%2.6% conv. - **door handle with lock**52K/yr-4.9%0.9% conv. - **internal door lock**53K/yr-14.5%1.2% conv. - **door handles with locks**43K/yr-12.8%0.4% conv. [**All search terms **](https://flapen.com/research/uk/baby-products/door-lock/search-terms)
## **Top door lock 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%3%£15K6%£31K9%£46K12%£61K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 41 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**JelKen Door Lock Bolts 3(75mm) 304 Stainless Steel Door Latch Slide Bolts Lock with Screws for Bathroom Bedroom Shed Garden Toilet 3 Inch**JelKen**£2.90**4.4★1,785 rev](https://www.amazon.co.uk/dp/B095RR82JP) [2**Moonybaby 2 Pack Door Lever Safety Lock Door Locks for Children Child Door Handle Lock Baby Proofing Door Lock Without Drilling Strong Adhesive Easy to Install No Tools Required (White)**moonybaby**£8.35**4.5★1,190 rev](https://www.amazon.co.uk/dp/B0BGNWZTF7) [3![Door Handle Locks | Child-Proof & Pet-Proof | Pack of 2 | Heavy-Duty 3M Adhesive Tape [White]](https://m.media-amazon.com/images/I/41gCgn5Fj4L.jpg)**Door Handle Locks | Child-Proof & Pet-Proof | Pack of 2 | Heavy-Duty 3M Adhesive Tape \[White\]**RAV3**£6.65**3.9★2,954 rev](https://www.amazon.co.uk/dp/B08B8TQGCW) [4**2PCS Door Lock Bolt - for Bathroom Bedroom Toilet Shed Shower Door - Catch Latch Slide Bolt Easy Fit with Screws**All-Pie**£3.99**4.5★1,279 rev](https://www.amazon.co.uk/dp/B085W5NH7B) [5**Silver Security Door Lock Set with Adjustable Latch and Privacy Handle Bedroom Entrance/Exit Locks**Movstriker**£13.80**3.6★182 rev](https://www.amazon.co.uk/dp/B0D4PV12CC)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**REDTRON Door Lever Lock 2 Pack Baby Safety Locks with 3M Adhesive Child Proof Door Handle Lock for Toddlers Bedroom Bathroom Kitchen Home Easy to Install No Drilling Required (White)**REDTRON**£6.55**28 rev4mo ago](https://www.amazon.co.uk/dp/B0GR9HVBJD) [**Gyfent 1Pack Door Latch 90/180 Degree Door Closer Aluminum Alloy Gate Latch Right Angle Gate Lock Hardware for Sliding Barn Bedroom Bathroom Window**Gyfent**£4.03**21 rev5mo ago](https://www.amazon.co.uk/dp/B0GHWPWHFC) [**BaBahuanhuan Interior Door Lock with Key Bedroom Bathroom Handle with Keys**BaBahuanhuan**£9.20**6 rev6mo ago](https://www.amazon.co.uk/dp/B0GD86ZSM6) [**COAFTUG Keyed Hasp Lock Right Angle 90 Degrees 3 inch Hasp and Staple with Padlock Silver Door Latch Hasp Twist Knob Shed Door Locks Zinc Alloy Keyed Locking Hasp with Key for Bedroom Cupboard Gate**COAFTUG**£6.16**7 rev7mo ago](https://www.amazon.co.uk/dp/B0G5Z5TXHP) [**MeBantoo 90 Degree Door Hasp Latch Lock Home Security Right Angle Latch Sliding Barn Door Lock for Gate Bedroom Fence Garden (Black 3.3 Inch with Key-1 Pc)**MeBantoo**£8.44**48 rev8mo ago](https://www.amazon.co.uk/dp/B0FJ8GKYWL)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**REDTRON Door Lever Lock 2 Pack Baby Safety Locks with 3M Adhesive Child Proof Door Handle Lock for Toddlers Bedroom Bathroom Kitchen Home Easy to Install No Drilling Required (White)**REDTRON**£6.55**4.4★**▲ 330%**](https://www.amazon.co.uk/dp/B0GR9HVBJD) [**Cheeky Monkey Door Lever Lock | 2 Pack | No-Drill Child Safety Door Handle Lock | Strong Adhesive | Baby Proofing for Home Kitchen Bedroom & Bathroom | White**Cheeky Monkey**£10.26**4.2★**▲ 313%**](https://www.amazon.co.uk/dp/B0GDH6X5VS) [**MeBantoo 90 Degree Door Hasp Latch Lock Home Security Right Angle Latch Sliding Barn Door Lock for Gate Bedroom Fence Garden (Black 3.3 Inch with Key-1 Pc)**MeBantoo**£8.44**4.4★**▲ 310%**](https://www.amazon.co.uk/dp/B0FJ8GKYWL) [**Gyfent 1Pack Door Latch 90/180 Degree Door Closer Aluminum Alloy Gate Latch Right Angle Gate Lock Hardware for Sliding Barn Bedroom Bathroom Window**Gyfent**£4.03**4.8★**▲ 294%**](https://www.amazon.co.uk/dp/B0GHWPWHFC) [**AILRINNI Smart Door Lock - 5 in 1 Fingerprint Door Lock Zinc Alloy with APP/IC Card/Passcode/Key/Fingerprint Biometrics Single Side Smart Door Handle for Home Bedroom Hotel(APP Smart Management)**AILRINNI**£34.83**4.1★**▲ 245%**](https://www.amazon.co.uk/dp/B0FSZKW83V)
**~~View all trending →~~**
## **What buyers say about door lock**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**20%
*“Key quality is good”*
**Locking Mechanism**15%
*“the locking mechanism is easy to use”*
**Value For Money**12%
*“Excellent value”*
**Advertised Vs Actual Product**8%
*“As described”*
**Size-Overall**8%
*“Fitted the same as my last one”*
**Ease Of Use**7%
*“Ease of use”*
**Assembly/Installation**6%
*“easy to assemble”*
**Strength**6%
*“Very sturdy was easy fix”*
**Security**3%
*“overall its a simple and useful safety solution”*
**Adhesion/Stickiness**2%
*“adhesion great”*
### **What buyers complain about **
**Quality-Overall**12%
*“Not the best build quality”*
**Locking Mechanism**10%
*“Terrible lock”*
**Durability**10%
*“the item breaks easily”*
**Adhesion/Stickiness**10%
*“the adhesive doesnt stick very well”*
**Functionality-Overall**9%
*“Didn't work”*
**Strength**7%
*“flimsy”*
**Size-Overall**6%
*“didn't fit the door”*
**Instructions/User Manual/Troubleshooting**4%
*“the instructions are horrible”*
**Value For Money**3%
*“Waste of money”*
**Advertised Vs Actual Product**2%
*“The description doesnt provide true knowledge about the product”*
### **Top return reasons **
**Size-Overall**47%
**Compatibility-Overall**12%
**Functionality-Overall**8%
**Locking Mechanism**6%
**Quality-Overall**4%
**Adhesion/Stickiness**4%
**Defective Material/Parts**4%
**Handle Quality**2%
**Strength**2%
**Advertised Vs Actual Product**1%
## **Common questions**
- **Is door lock profitable to sell on Amazon United Kingdom?**
- The niche generates £510K/yr across 41 tracked products. 1 of 6 products launched in the last 360 days are still selling. 90-day search growth is -2.6%. Flapen's verdict: Worth a look (61/100).
- **How competitive is the door lock niche?**
- 38 brands and 73 sellers compete. The top 5 products take 39% of clicks and top 5 brands hold 39% of demand.
- **What do buyers complain about in door lock?**
- Top complaints mined from reviews: Quality-Overall, Locking Mechanism, Durability. The return rate is 1.9%.
- **When does demand for door lock peak?**
- Demand is steady year-round — the busiest month runs 1.2× the quietest.
- **What does it cost to enter the door lock niche?**
- Listings span £2.90–£34.83; the average listing price is £10.24 (sweet spot $15–$100). The average incumbent carries 987 reviews — the moat a new listing must climb.
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