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Locksmiths in the United Kingdom do four kinds of work: getting people back into homes they are locked out of, replacing or upgrading cylinders and locks, repairing doors and windows whose mechanisms have failed, and putting a property back together after a break-in. On a typical British street that means euro cylinders in uPVC and composite doors, multipoint locking strips that have dropped out of alignment, nightlatches on Victorian front doors, mortice locks in timber, and window handles nobody has looked at since the windows went in.

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Here is the thing most people do not know before they need one at midnight: there is no licence to be a locksmith in the UK. The activities the Security Industry Authority can license are listed in Schedule 2 to the Private Security Industry Act 2001 - manned guarding, door supervision, private investigations, security consultants and key holders - and locksmithing is not among them. The SIA's guidance on whether you need a licence does not list it either. Anyone can print a van livery and take the job.

That absence shapes everything else in this guide. With no register to check, the protection available to you comes from the ordinary consumer law that applies to any trader, from asking the right questions before anyone touches the door, and from the one adjacent activity that is licensed: key holding, which Schedule 2 describes as keeping custody of, or controlling access to, a key or similar device for operating a lock.

What locksmiths actually do: lockouts, cylinder changes, repairs and door alignment

A surprising share of call-outs are not lock failures at all. Doors drop on their hinges, timber swells in a wet autumn, and a multipoint mechanism that needs the door lifted to lock is a door about to strand somebody. Describing the symptom accurately gets you the right person and the right parts on the first visit.

  • Lockouts: keys lost, broken in the cylinder, or locked inside, ideally resolved without destroying the door.
  • Cylinder changes: replacing the euro cylinder in a uPVC or composite door, the fastest way to cut off every key in circulation.
  • Lock upgrades: replacing worn nightlatches, mortice locks and window locks, and fitting hardware that resists the attacks a cylinder alone does not.
  • Multipoint mechanism repair: replacing the gearbox or strip inside a uPVC or composite door when the handle lifts but nothing engages.
  • Door and window alignment: adjusting hinges, keeps and strikers so a door locks without being shouldered into place.
  • Burglary repairs: making a damaged door or window secure the same day, then a permanent repair afterwards.
  • Safes, keysafes and outbuildings: fitting and opening safes, and sorting out the sheds and side gates that get forgotten.

There is no locksmith licence in the UK, so check these things instead

It is worth repeating because so much marketing implies otherwise: locksmithing is not a licensable activity. The SIA regulates the private security industry and licenses security guarding, door supervision, close protection, cash and valuables in transit, public space surveillance using CCTV and key holding. Nothing in Schedule 2 to the Private Security Industry Act 2001 covers fitting locks, opening locks or cutting keys. A business displaying a licence-style badge is showing you a membership, a trade association or a marketing logo - which may be perfectly respectable, but is not a government licence, and it is fair to ask which it is.

Key holding is the exception, and it is genuinely licensed. If a firm is going to keep your spare keys or control access to your property, that activity falls within the Act and within the SIA's key holding sector, and asking whether the individual holding your keys is licensed is a reasonable question.

In place of a licence check, use the checks that do exist. Get the trading name and address, confirm they are local rather than a call centre routing the job onward, ask for the total price before work begins including any call-out element, and ask what happens if the door has to be drilled. Section 49 of the Consumer Rights Act 2015 treats every contract to supply a service as including a term that the trader must perform the service with reasonable care and skill - the standard that applies whether or not anyone is registered with anything.

Locked out: agreeing the price before the drill comes out

A lockout is a bad negotiating position, so settle the commercial questions on the phone while you are still outside. Ask for the total expected charge including the call-out, ask what extra a replacement cylinder would be, ask how long they will be, and ask whether the price changes if the job runs past midnight. Ask for a name, and ask which town they are coming from.

When they arrive, ask how they intend to open the door before they start. A competent locksmith opens most domestic locks without destroying anything; drilling is sometimes genuinely necessary, but it should be explained and priced beforehand, not discovered on the invoice. Keep the old cylinder and any parts removed, and get a written receipt showing what was fitted.

Contracts agreed at your home or over the phone come with cancellation rights under the Consumer Contracts (Information, Cancellation and Additional Charges) Regulations 2013, generally ending 14 days after the day the contract was entered into. In an emergency you will usually want the work done immediately - which is allowed, but the right to cancel can be lost where the service has been fully performed and performance began at your express request with your acknowledgement that you would lose that right. That is exactly why the price should be agreed before the work starts.

Changing the locks after moving in, a break-in or a relationship ending

New keys matter less than accounting for the old ones. When you move into a British home, you generally have no idea how many keys exist: previous owners, their relatives, a cleaner, an estate agent, a builder mid-project, a neighbour who waters plants. On a uPVC or composite door, replacing the euro cylinder is usually quicker and cheaper than replacing the whole lock and instantly retires every key out there.

After a burglary, the order is secure first, upgrade second. Get the property closed up the same day, then look at what failed and why, once the police have been. If a key was taken, or a set of keys with an address on them, treat every lock they open as compromised.

When a household splits, changing locks is as much a legal question as a practical one: someone with a right to occupy the property may not lawfully be locked out, so take advice on your circumstances before changing the locks rather than after. If you rent, speak to your landlord or agent first, since your tenancy will usually say something about altering locks.

LokalMatch is where you find people to ask, and nothing more. You describe the door, the lock and what has happened once, with your postcode, and locksmiths covering your area contact you directly; the pros pay for the requests they receive. LokalMatch does not attend lockouts, does not carry out any work, does not set prices and does not vet, rank or recommend any locksmith who replies - so the questions about price, parts and identity remain yours to ask.

Locks and getting out: fire safety comes before security

Every lock decision has a second side to it, which is how quickly everyone in the house can get out in the dark. Government fire safety advice for the home is to plan an escape route, keep exits clear, and keep door and window keys where everyone can find them. A back door double-locked with the key hidden in a drawer, or a window lock whose key vanished years ago, is a security measure that has quietly become a fire risk.

Tell your locksmith how the household works before they specify anything: who is at home alone, whether children or older relatives need to be able to open a door unaided, and which door everyone would use if the hall were full of smoke. There is usually a way to have both, but only if it is designed in.

The fire safety guidance that applies to building work sits alongside this. Approved Document B covers fire safety in and around buildings in England, with a dwellings volume, and Scotland and Northern Ireland have their own equivalents - relevant if you are altering doors as part of building work rather than simply changing a cylinder.

What new-build security standards can tell you about an older door

New homes in England have to meet a security requirement that older ones do not. Approved Document Q sets standards for doors and windows to resist physical attack by a burglar, covering robustness and the hardware fitted, and it supports requirement Q1 of the Building Regulations 2010, which applies only in relation to new dwellings. Scotland's equivalent is standard 4.13 in Schedule 5 to the Building (Scotland) Regulations 2004, requiring doors and windows vulnerable to unlawful entry to be capable of being secured to deter housebreaking, applied to domestic buildings. Northern Ireland has its own building regulations.

For an existing house none of this is a duty, but it is a useful description of what good looks like. The door, the frame, the hinges, the cylinder and the hardware form one system, and an expensive cylinder in a frame that flexes is a poor use of money. Ask a locksmith to assess the whole doorset rather than just sell you the part that is easiest to change.

Keeping locks working through a British winter

  • Lubricate cylinders with a proper lock lubricant rather than a general-purpose oil, which attracts grime and eventually gums up the mechanism.
  • If you have to lift, shove or wiggle a door to lock it, have the hinges and keeps adjusted before the mechanism breaks with the door shut.
  • Check window locks and their keys once a year, and keep the keys where the household can find them in a hurry.
  • Deal with a key that turns stiffly straight away, because a key that is hard to turn is the last warning before one that snaps.
  • Check side gates, sheds and garages at the same time as the house, since that is where tools and ladders live.
  • Keep spare keys with a person rather than under a stone, and if you use a keysafe, fit it somewhere out of sight and change the code when someone no longer needs access.

Locksmiths: frequently asked questions

Do locksmiths have to be licensed in the UK?

No. There is no locksmith licence in the United Kingdom. The activities the SIA can license are set out in Schedule 2 to the Private Security Industry Act 2001 and cover roles such as manned guarding, door supervisors, private investigators, security consultants and key holders; locksmithing is not among them, and the SIA's guidance on who needs a licence does not list it. Any badge you are shown is a trade membership rather than a government licence.

How do I avoid an overpriced emergency locksmith?

Settle the money on the phone before anyone travels: the total expected charge, what a replacement cylinder would add, and whether the price changes out of hours. Ask for the trading name and address and which town they are coming from. When they arrive, ask how they plan to open the door before they start, and get a written receipt listing the parts fitted.

Should I change the locks when I move house?

It is the sensible default, because you cannot know how many keys are in circulation. On a uPVC or composite door, changing the euro cylinder is usually enough and cheaper than replacing the whole lock. Do the back door, side gate and any outbuilding at the same time, and check the window locks while someone competent is there.

Can a locksmith open my door without damaging it?

Often, yes - most domestic locks can be opened non-destructively by someone who knows the mechanism. Drilling is sometimes necessary, for instance where a cylinder has already failed or a key has snapped badly, but it should be explained and priced before it happens rather than appearing on the bill. Ask about the method before the work starts.

Is it legal to change the locks to keep someone out of the property?

That depends on their legal right to occupy it, and it is a question for proper advice rather than for a locksmith. Someone entitled to live there may not lawfully be shut out, and a tenancy or lease will usually say something about altering locks. Get advice about your own circumstances first; a locksmith can fit whatever you decide, but cannot tell you whether you are entitled to decide it.

Does a better lock affect my home insurance?

It can, in both directions, so ask your insurer rather than your locksmith. Policies often set conditions about the locks fitted to final exit doors and accessible windows, and those conditions can matter after a claim. Get any requirement from the insurer in writing before the work is specified, and keep the receipt showing what was fitted.

Sources

  1. Private Security Industry Act 2001, Schedule 2: activities liable to control
  2. SIA: find out if you need an SIA licence
  3. Security Industry Authority: about us and the sectors it licenses
  4. Consumer Rights Act 2015, section 49: service performed with reasonable care and skill
  5. Consumer Contracts (Information, Cancellation and Additional Charges) Regulations 2013, Part 3
  6. Fire safety in the home
  7. Approved Document B: fire safety (England)
  8. Approved Document Q: security in dwellings (England)
  9. Building (Scotland) Regulations 2004, Schedule 5: standard 4.13 security
  10. Report a crime or anti-social behaviour

Written by the LokalMatch editorial team. Last reviewed 14 September 2026. How we write and check our guides

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What affects the cost of locksmith

Prices depend on the details of your project. We only publish price ranges when they’re backed by real LokalMatch quote data or reliable sources. Until then, here’s what usually changes the price:

  • Number of cameras, sensors or devices
  • Wired or wireless installation
  • Monitoring and subscription fees
  • Running cables through finished walls or ceilings
  • Size and layout of the home
  • Integration with other smart home or network equipment

How to compare locksmiths before you hire

  • Choose an installer who looks at your home in person and explains where cameras, sensors or access points should go.
  • Ask whether monitoring is included, whether it's optional and what the contract length and cancellation terms are.
  • Find out whether you'll own the equipment or lease it, and whether it works with other systems.
  • For hardwired systems, make sure any electrical work is done by a licensed electrician.
  • Ask how they'll set up passwords, apps and network security, and make sure you get the admin access.

Questions to ask locksmiths before you hire

  • Will I own the equipment, or is it leased or tied to a contract?
  • Is monitoring required, and what are the cancellation terms?
  • Where will the cameras point, and will they capture my neighbours' property?
  • Who will have access to the video and the account?
  • Will this work with my existing Wi-Fi, locks or smart home devices?
  • What warranty covers the equipment and the installation?

Locksmith permits and local rules

Some locksmith work needs a permit or has to meet local bylaws. Rules vary by municipality, so ask your pro whether a permit is needed and who will apply for it — and check with your city or town if you’re unsure.

Permits and licensing

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