The best room door locks, compared.
Top pick: QWORK rotate bolt – Highest score at 92: 4.6 from 1,833 reviews at about £5.95. The listing conflicts on material and size, and no outside release is listed. It is not a BS 3621 lock. Best value: Jelken 75 mm slide bolt – About £3.79 with 4.5 from 1,887 reviews and 304 stainless steel stated. A review says it stuck and locked someone in. No outside release is listed. Updated October 2026.
UK ironmongers treat a proper bathroom pattern as a mortice lock or a tubular deadbolt with a thumbturn inside and an emergency release outside. A surface slide bolt is the cheap inside-only alternative. If someone can fasten the door, someone outside must be able to open it without breaking it. No slide bolt lists an outside release, and neither does the rotate bolt. The surface bolts rate higher than the keyed levers. The keyed levers sit between 3.6 and 4.0. BS 3621:2017+A1:2024 is key-both-sides thief resistance for an entrance door. BS 8621:2017+A1:2024 is a key outside and a thumbturn or handle inside, so you can leave without a key. A bathroom privacy lock is neither of those. Secured by Design explains which standard matches which way of getting out. How to choose is set out in the [room door lock buying guide](/hub/door-and-window-security/room-door-lock/sub/room-door-lock-buying-guide).
UK ironmongers treat a proper bathroom pattern as a mortice lock or a tubular deadbolt with a thumbturn inside and an emergency release outside. A surface slide bolt is the cheap inside-only alternative.
36 products checked · 61 hrs invested · +22,400 readers
Swipe for more
1-2 of 10
Personal buying guide
Question 1 of 2
What is the job?
The QWORK rotate bolt is about £5.95 with 4.6 from 1,833 amazon.co.uk reviews, the highest star line in this set. Reviews describe a thick bolt that turns rather than slides, used as a bathroom snib and fitted in about 10 to 15 minutes. One review says a hard kick would still open it. The listing gives two materials and two sizes. There is no outside release.
Pros
Cons
Best for: You want an inside-only bathroom or bedroom bolt and you can always reach it yourself.
Less suitable: A child might fasten the door, or you need a fire-door ironmongery schedule.
Specifications
Common questions
Can you open this QWORK bolt from outside the bathroom?
The listing does not include an outside release. Reviews use it as an inside snib. If someone fastens it and cannot turn it, the bolt is not designed to be undone from the landing.
Is it stainless steel or zinc alloy?
Both appear on the listing. The bullet says zinc alloy. The material field says stainless steel. The size line also disagrees with the centimetre dimensions.
Does it come with a key?
Included components are mounting screws. A special-feature field says Key Unlock, but no keys are listed in the box.
The Jelken 75 mm slide bolt is about £3.79 with 4.5 from 1,887 reviews and a number-one rank in Latches and Bolts on the listing. Reviews praise an easy fit and a bolt that does not feel flimsy. One reviewer locked themselves in the bathroom because it stuck. The size line says one pack, while a review mentions a two-pack. There is no outside release and no British Standard code.
Pros
Cons
Best for: You want a cheap inside bolt for a bathroom or cupboard and you will ease the keep if it binds.
Less suitable: Someone else must be able to open the door from the landing.
Specifications
Common questions
Does the Jelken bolt include screws?
Yes. The listing says six stainless screws and 4 mm mounting holes.
Can it be opened from outside?
No outside release is listed. A review says the bolt stuck and locked them in the bathroom.
What is it made of?
The bullets say grade 304 stainless steel for the body, screws and spindle.
All-Pie sells two 304 slide bolts for about £4.49, with 4.5 from 1,325 reviews. Buyers use them on bathrooms, bedrooms and cupboards and call them sturdy enough for ordinary privacy, not for someone forcing the door. The indoor field says indoor. Screw quantities in reviews are inconsistent. There is no outside release.
Pros
Cons
Best for: You need two indoor slide bolts and you have spare screws if the pack is short.
Less suitable: The bathroom must be openable from the landing.
Specifications
Common questions
How many bolts are in the All-Pie pack?
The title and the unit count say two. The listed size is 7.5 by 3.5 cm each.
Are they for an outdoor shed?
The listing asks that and does not answer. The indoor-outdoor field says indoor. Named rooms are bathroom, bedroom and wardrobes.
Do they include screws?
The fitting bullet says screws are provided. Reviews disagree: one pack arrived with two screws, another with four, and another buyer said none were missing.
The Moonybaby two-pack is about £7.99 with 4.5 from 1,250 reviews, ranked in baby door locks on the listing. It sticks under a lever and needs two buttons to release. Reviews say the tape holds for toddlers and for keeping a room private while working. They also say a hard tug pulled one off, removal marked the paint, and spare pads are not in the box. The listing does not claim EN 16948.
Pros
Cons
Best for: Lever handles in a rented home, and you still supervise the bath and the stairs.
Less suitable: Round knobs, a fire door you must not cover, or the top of the stairs as the only barrier.
Specifications
Common questions
Does the Moonybaby lock need tools?
The listing says no tools and no drilling. It uses adhesive tape. Reviews describe peel-and-stick fitting.
Will it fit every handle?
The listing asks that and tells you to check the handle. It is a lever lock. Round knobs are not stated as compatible.
Can an adult open it?
The bullets say both buttons must be pressed together, which is meant to be easy for adults and hard for small hands. Reviews say one-handed use is awkward, and removal can leave marks.
The YUOIP bolt is about £3.99 with 4.3 from 3,257 reviews, the largest count in this set. It is a stamped 84 by 46 mm slide bolt at 58 g, with six screws. Reviews say it keeps a bathroom door shut and also call the metal thin, with sharp edges and a slide that catches if the keep is out of line. It is not a security lock.
Pros
Cons
Best for: You want the cheapest widely reviewed slide bolt and you will dress the edges and align the keep.
Less suitable: You want a bolt that reviews describe as thick, or you need outside release.
Specifications
Common questions
Can the YUOIP bolt go on a bathroom door?
The bullets name bathrooms, and reviews include bathroom use. It is an inside slide bolt. No outside release is listed.
Are the edges finished?
Several reviews say the pressed edges are sharp and needed a file before the bolt was safe to handle.
What screws are included?
Six stainless screws, M4 x 16 mm, and a 4 mm mounting hole.
The lmytdo white slide bolt is about £3.79 with 4.2 from 916 reviews and a listed weight of 20 g. The bolt is used on bathrooms and gates. The repeated complaint is the screws: heads shear, packs are short, and broken shanks stick in the timber. A few reviews say the catch itself broke. Dimensions are not on the listing.
Pros
Cons
Best for: You want a white indoor bolt and you will supply better screws.
Less suitable: You need the fixing that comes in the box to hold a gate, or you need outside release.
Specifications
Common questions
Are the lmytdo screws usable?
The listing says screws are included. Several reviews say the heads snap off, there are too few, or none arrived. Buyers then used their own screws.
Is the bolt itself the weak part?
Some reviews like the bolt and blame the screws. Others say the catch or the knob falls off, or it broke on first use.
Will it keep a child out?
The bullet says it can, if you fit it out of reach. There is no child-safety standard on the listing, and no outside release.
The XFORT 3-lever sashlock, model 51.05.65, is about £10.99 with 4.1 from 765 reviews. It is the only mortice case in this set, for internal wooden doors, with a brass latch and deadbolt and no handles. Reviews that match an existing cut-out call it an easy swap. Others report a broken lever, a snapped key, small screws, and a square forend when they expected a round end. The 65 mm in the title is not labelled as backset. The fire sentence has no certificate.
Pros
Cons
Best for: You are replacing a 3-lever internal sashlock and the case, forend shape and backset match.
Less suitable: A fire door without paperwork, or a door that needs handles in the same box.
Specifications
Common questions
Does the XFORT sashlock include handles?
No. The contents are keys, a faceplate, a keep and screws. A review says you still need a handle.
Does it have a deadbolt?
Yes. The bullets say the latch and the deadbolt are solid brass, and the latch is reversible.
Is the fire-test line enough for a fire door?
The listing says CE approved and EN 1634-1 tested. It does not give a certificate number, a BS EN 12209 code, or the doorset. A structured field also says control method App, which conflicts with the keyed lock.
The BaBahuanhuan keyed handle is about £9.99 with 4.0 from only 12 amazon.co.uk reviews. It is an aluminium set with three keys for a stated door thickness of 25 to 45 mm and a stated latch of 60 or 70 mm. One reviewer measured 90 mm and could not use it. Others call it flimsy or sticky, or say it worked once fitted. It is the thinnest review file in the set.
Pros
Cons
Best for: You have measured a 60 or 70 mm latch hole and you accept a 12-review listing.
Less suitable: A 44 mm or 57 mm UK mortice, or any door you cannot measure first.
Specifications
Common questions
Will this handle fit a standard UK backset?
The listing says an adjustable latch at 60 mm or 70 mm. One of the few reviews says the backset was 90 mm and would not fit without more carpentry. Measure the door, and treat 12 reviews as a small sample.
Is it for an exterior door?
The title says interior and exterior. The indoor-outdoor field says indoor. The question about an exterior door is unanswered.
Are keys included?
Yes. The contents list three keys, a lock body, a latch and four screws.
The Faankiton lever, model MS0028, is about £16.99 with 3.8 from 160 reviews, the dearest handle in this set. It claims a key outside, a turn inside, a 60 or 70 mm latch, and doors of 30 to 45 mm, plus ANSI Grade 3. Reviews include a clean swap into existing holes and also same-day breakage, a spindle that would not lock a 40 mm door from inside, and a key that jammed. It is a poor fit if someone could be shut in.
Pros
Cons
Best for: An existing 60 mm tubular hole on a door you have measured, and you can still open the door if the lock fails.
Less suitable: A bedroom someone could be locked inside, or a door thicker than the thread the reviews describe.
Specifications
Common questions
Will the Faankiton lever lock a 40 mm door from inside?
The listing says 30 to 45 mm. A review of a 40 mm door says the thread reached about 40 mm and needed about 55 mm, so the inside lock would not engage.
What does ANSI Grade 3 mean here?
The bullet claims ANSI Grade 3. That is a US builders' hardware grade. The listing has no BS EN 12209 code and no BS 3621 or BS 8621 mark.
Have buyers been locked in?
Yes. Reviews include a lock that broke and trapped the occupant, and a key inserted the wrong way that would not come out. The listing says not to force the mechanism.
The Movstriker set, sold with Qrity handles, is about £13.99 with 3.6 from 184 reviews, the lowest star line here. It states a 30 to 50 mm door, a 60 or 70 mm latch and three keys. Some buyers fitted it easily. Others report a loose or cracked handle, a thin strike, a latch that opened under a push, and a jam that left people locked in until the lock was broken. There is no British Standard code.
Pros
Cons
Best for: A measured internal door where a failed handle would not trap anyone.
Less suitable: A bathroom or bedroom where the lock must both hold and still let you out.
Specifications
Common questions
Does this Movstriker set include a deadbolt?
The listing asks and does not answer. The box list is a handle set, an adjustable latch, four screws and three keys, not a separate mortice deadbolt.
Will the handle stay tight?
Several reviews say the handle was loose immediately, wobbled, cracked, or came off within days. One review says a downward push opened the door while it was locked.
Can it be used on an exterior door?
The title says entrance and exit. Recommended uses are internal doors. The exterior question is unanswered. One review called it too heavy for their internal door.
Ten amazon.co.uk room-door-lock listings were scored from the listing text and the review notes already on file. There was no lab test. Stars and review counts are the UK figures on those listings. The weights below sum to 100 and follow the buying order: the job, whether someone outside can open the door, the measurements, the door you must not drill, then the failures that show up in reviews. The highest score is the top pick, the QWORK rotate bolt at 92. The best value is the Jelken 75 mm slide bolt at about £3.79, with 4.5 from 1,887 reviews. None of these ten is scored as BS 3621, BS 8621 or Secured by Design.
The job
30%Whether the listing is an inside bolt, a keyed lever, a 3-lever sashlock, or an adhesive lock for a lever. A bathroom, a shared bedroom, a like-for-like sashlock and a toddler are different jobs.
Escape
25%If someone can fasten the door, someone outside must be able to open it without breaking it. No slide bolt in this set, and not the QWORK rotate bolt, lists an outside release.
Measurement
20%Door thickness and the edge-to-handle distance. A stated 60 mm or 70 mm latch is not a UK 44 mm or 57 mm backset. The QWORK size lines conflict, so no single size is scored.
The door
15%A fire door, a flat entrance and an unknown common-part door stay undrilled unless that doorset's evidence allows it. A fire sentence without a certificate is not treated as approval.
Review failures
10%Snapped screws, sticky keeps, short spindles, latches that push open, and keys that snap. Stars count only with the UK review file behind them. A 12-review file stays a thin sample.
Pick the job before the star rating. An inside bolt, a keyed lever, a 3-lever sashlock and an adhesive lever lock are not substitutes. Prices on these ten amazon.co.uk listings run from about £3.79 to about £16.99. The surface bolts have the higher stars. The keyed levers have the weaker reviews. If a child can fasten the door, an inside-only bolt is the wrong buy. None of these listings is a BS 3621 or BS 8621 entrance lock.
A room door lock is privacy hardware for a bedroom, bathroom or WC. It is not a thief-resistant front-door lock. BS 3621:2017+A1:2024 is key-both-sides thief resistance for an entrance door. BS 8621:2017+A1:2024 is a key outside and a thumbturn or handle inside, so you can leave without a key. A bathroom privacy lock is neither of those. Secured by Design explains which standard matches which way of getting out. None of the ten listings here is BS 3621, BS 8621 or Secured by Design.
Common UK mortice cases are 64 mm, about 44 mm backset, or 76 mm, about 56 to 57 mm backset. The lever sets advertise 60 mm or 70 mm. One BaBahuanhuan review measured 90 mm. Measure the door before you order.
No slide bolt in this set lists an outside release, and the QWORK does not either. A Jelken review describes being locked in when the bolt stuck. If someone can fasten the door, someone outside must be able to open it without breaking it.
The XFORT is a 3-lever internal sashlock. BS 3621 is key-both-sides thief resistance for an entrance door. The fire sentence has no certificate or doorset. Do not copy another brand's EN 16948 line onto the Moonybaby listing.
The first split is the job, not the star rating. Bathroom privacy, a keyed shared bedroom, a like-for-like sashlock, and a toddler stopped from pushing a lever are four different buys. You can always reach an inside bolt, and you accept that nobody outside can release it: that is a surface bolt. The QWORK turns. The Jelken, All-Pie, YUOIP and lmytdo slide. You are matching an existing sashlock: that is the XFORT, and only if the case, forend and backset agree.
Measure door thickness and the distance from the edge to the handle before you order. Common UK mortice cases are 64 mm, about 44 mm backset, or 76 mm, about 56 to 57 mm backset. The BaBahuanhuan, Faankiton and Movstriker advertise 60 mm or 70 mm. That is not the same number. One BaBahuanhuan review measured 90 mm and could not use the handle without more carpentry. The BaBahuanhuan states doors of 25 to 45 mm, the Faankiton 30 to 45 mm, and the Movstriker 30 to 50 mm.
Three typical situations, each with a recommendation from this comparison.
You can always reach the bolt, and nobody else has to open it from the landing. The QWORK rotate bolt is the top pick at about £5.95, with 4.6 from 1,833 reviews. It turns rather than slides. The listing disagrees on metal and size, and it does not list an outside release.
You want the lowest price for an inside bolt and you will ease the keep if it binds. The Jelken 75 mm slide bolt is best value at about £3.79, with 4.5 from 1,887 reviews. Six screws are listed. One review says it stuck and locked them in the bathroom.
You rent, and a toddler can push a lever. The Moonybaby two-pack is about £7.99, with 4.5 from 1,250 reviews, and it needs no drill. The listing does not claim EN 16948. Keep a stair gate at the top of the stairs and an adult at the bath. It does not fit a round knob.
The QWORK rotate bolt is the top pick. It has the highest score of these ten amazon.co.uk listings, 92, at about £5.95, with 4.6 from 1,833 reviews, for an inside-only turn bolt. The listing conflicts on material and size, and there is no outside release. The best value is the Jelken 75 mm slide bolt at about £3.79, with 4.5 from 1,887 reviews and 304 stainless steel stated. It can stick, and it also has no outside release. The keyed levers score lower. None of the ten is BS 3621 or BS 8621.
QWORK rotate bolt
Highest score at 92: 4.6 from 1,833 reviews at about £5.95. The listing conflicts on material and size, and no outside release is listed. It is not a BS 3621 lock.
Jelken 75 mm slide bolt
About £3.79 with 4.5 from 1,887 reviews and 304 stainless steel stated. A review says it stuck and locked someone in. No outside release is listed.
Editorial
Peter F. is the editor for DIY & tools at productscompared.co.uk. Comparisons in this category are checked against amazon.co.uk listings, review evidence and public UK sources.
Guides on what to look for, how to use a product, and common mistakes.
Public UK sources from the research digest, used for this page in October 2026. Prices, stars and review counts are the amazon.co.uk figures in this comparison. None of the ten listings is treated as BS 3621, BS 8621 or Secured by Design.
Expert source (DIY & tools): Charlie White (Charlie DIYte) (external profile) – public expert commentary used as a research source, not as a contributor to our pages.
This page contains affiliate links to amazon.co.uk with the tag pcuk26-21. If you buy through them, we may earn a commission at no extra cost to you. Prices, stars and review counts are the UK listing lines in this comparison. We did not run a lab test.
