door lock
Worth a lookShows 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.
Brand share
Incredible39%top-5 brand share — no brand owns this niche
Returns
Great1.9%return rate — above 6% kills the launch gate
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Competition
Great39%top-5 click share — an open shelf
Review moat
Good986.61avg incumbent reviews — the moat a new listing must climb
Price range
Good£2.90–£34.83cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Good£510K£510K/yr · 1.7M searches
Conversion
Okay2.9%search→purchase rate — share of searches ending in a sale
Avg price
Okay£10.24avg 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
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
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.No pronounced peak months · busiest ÷ quietest = 1.2×
Product shelf
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 41 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
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£2.904.4★1,785 rev
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£8.354.5★1,190 rev
![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£6.653.9★2,954 rev
2PCS Door Lock Bolt - for Bathroom Bedroom Toilet Shed Shower Door - Catch Latch Slide Bolt Easy Fit with Screws
All-Pie£3.994.5★1,279 rev
Silver Security Door Lock Set with Adjustable Latch and Privacy Handle Bedroom Entrance/Exit Locks
Movstriker£13.803.6★182 rev
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£6.5528 rev
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£4.0321 rev
BaBahuanhuan Interior Door Lock with Key Bedroom Bathroom Handle with Keys
BaBahuanhuan£9.206 rev
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£6.167 rev
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£8.4448 rev
Trending
90-day click momentumREDTRON 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£6.554.4★
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£10.264.2★
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£8.444.4★
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£4.034.8★
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£34.834.1★
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Key quality is good”
“the locking mechanism is easy to use”
“Excellent value”
“As described”
“Fitted the same as my last one”
“Ease of use”
“easy to assemble”
“Very sturdy was easy fix”
“overall its a simple and useful safety solution”
“adhesion great”
What buyers complain about
“Not the best build quality”
“Terrible lock”
“the item breaks easily”
“the adhesive doesnt stick very well”
“Didn't work”
“flimsy”
“didn't fit the door”
“the instructions are horrible”
“Waste of money”
“The description doesnt provide true knowledge about the product”
Top return reasons
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.
Related niches in Baby Products
- 63baby toysLaunch it
- 63buggy fanWorth a look
- 63nappy bin refill cassettesWorth a look
- 63car seat travel bagWorth a look
- 63retractable stair gateWorth a look
- 64playpenLaunch it