Avoid pushing the fragment further in
Do not insert another key, glue or improvised tools into the keyhole. Explain whether the fragment is visible and whether the lock was already stiff before the break. A broken key may be the result of a worn key, a lock fault or pressure from the door.
If the door is open, do not shut it just to test the broken lock. If it is closed and you are outside, identify that as an access problem as well as a broken-key issue.
What helps an initial enquiry
Send the postcode, door material and lock type if known. A clear photo of the keyhole and remaining piece can help, but do not attempt to expose the fragment by dismantling the lock.
Say whether you have another undamaged key and whether it previously worked smoothly. A spare may help after a fragment is removed, but continuing to use a damaged or badly worn key can create another problem.
Extraction is only part of the question
Removing the broken piece does not prove the lock will operate reliably. Ask how the cause of the break and the remaining lock function will be checked, and what additional work might be needed.
We must confirm whether we can undertake the extraction on your lock. We'll confirm the work and price before we set off.
Your questions
Can I keep using the spare key?
Do not insert it while a fragment remains. After assessment, the lock's condition and cause of the break need considering before further use.
Does this cover broken car keys?
This page is for home locks. For a vehicle key or ignition, use the Car Locksmith section and send the vehicle details.