What should I do first if I have lost my keys or I am locked out?

Check with anyone who might hold a spare key first. If you cannot get in, contact a reputable, ideally accredited, emergency locksmith rather than attempting to force entry, which can damage the door and void insurance.

Should I change my locks if I lose my keys?

Yes, especially if the keys had any identifying information attached, or if you are unsure where they were lost. Changing the locks removes the risk of someone else using the lost keys to enter your property.

How much does an emergency locksmith cost?

Emergency locksmith callouts typically cost between £80 and £200, depending on the time of day, the type of lock and whether entry requires non-destructive or destructive methods.

How do I find a trustworthy emergency locksmith?

Look for a locksmith who is a member of a recognised trade body (such as the Master Locksmiths Association), asks for proof of address or ID before granting entry, and provides a clear, upfront price before starting work.

Will a locksmith need to damage my door to get in?

A skilled locksmith will usually attempt non-destructive entry methods first, which do not damage the door or lock. Destructive entry is normally a last resort and will be explained and agreed with you first.

What proof do I need to show a locksmith?

A reputable locksmith will typically ask for photo ID and proof of address, such as a utility bill, before letting you into a property to confirm you are the rightful occupant.

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Homeowner Hub › Emergency Home Repairs › Lost Keys

Lost Keys

Locked out or lost your keys? Learn the safe steps to take, when to change your locks, typical locksmith costs and how to find a trustworthy emergency locksmith.

Last reviewed: August 2026 · Reviewed by: The TopTenTrades Editorial Team

Quick Answer

1.Check with family, housemates or neighbours for a spare key
2.Check all doors and accessible windows before assuming you are locked out
3.Do not attempt to force entry yourself
4.Contact a reputable, accredited emergency locksmith
5.Consider changing the locks once you are back inside

Problem type: Lockout / lost keys
Typical trade: Locksmith
Urgency: High, especially outside daylight hours
Typical repair time: 30 minutes–1 hour
Typical cost: £80–£200
Risk if ignored: Prolonged lockout, security risk if keys are not replaced

What To Do

1.Check with anyone who might hold a spare key — family, housemates, neighbours or a letting agent.
2.Check all external doors and accessible windows in case one has been left unlocked.
3.Do not attempt to force entry yourself, which can damage the door frame or lock and may affect an insurance claim.
4.Contact a reputable emergency locksmith, ideally one accredited by a body such as the Master Locksmiths Association.
5.Have photo ID and proof of address ready, as a trustworthy locksmith will usually ask for this before letting you in.
6.Once inside, consider whether the locks should be changed, especially if the lost keys had any identifying details.

Signs You May Have This Problem

•Keys are missing from your usual place (bag, pocket, hook)
•You cannot locate keys after checking likely locations
•Keys were lost in a public place or on a night out
•A key has snapped or become stuck in the lock
•You suspect keys may have been stolen

Common Causes

•Keys misplaced at home, work or while out
•Keys lost or stolen while travelling
•A key snapping due to wear or a stiff lock mechanism
•A lock jamming or failing, preventing the key from turning
•Keys left inside the property when a door self-locks

Lost Keys: Typical Costs

Repair	Typical Cost (UK)
Emergency callout (daytime)	£80–£120
Emergency callout (evening/night)	£120–£200
Non-destructive entry	Included in callout, typically
Lock replacement (per lock)	£60–£150

Costs vary by time of day, lock type (e.g. standard cylinder vs multi-point uPVC) and whether non-destructive or destructive entry is required.

When Should You Call An Emergency Professional?

check_circleYou cannot locate a spare key within a reasonable time
check_circleA key has snapped inside the lock
check_circleThe lock mechanism is jammed or not turning
check_circleYou believe keys may have been stolen
check_circleYou need entry outside of normal daytime hours

How To Prevent This

•Leave a spare key with a trusted neighbour or family member
•Consider a secure key safe for emergency access
•Attach a discreet, non-identifying tag to keys rather than your address
•Have locks serviced periodically to prevent jamming
•Consider upgrading to a smart lock with keyless entry options

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