1. Pause and check who needs help

Step somewhere safe and keep your phone with you. Tell the person taking your call if children or vulnerable people are inside, or if you have an urgent welfare concern. If there is fire, a medical emergency or an immediate threat to life, call 999. Do not wait for a locksmith in those circumstances.

2. Look for an authorised spare

A household member, landlord or managing agent may have a spare key and permission to help. For a flat, work out whether the shared entrance or your own front door is blocking access. Avoid climbing to windows, forcing the frame or wedging a communal fire door open. These can turn an inconvenient lockout into injury or further damage.

3. Describe how the door became locked

Was the door simply pulled shut, or was a key used to lock it? Were the keys left indoors, lost, or left in the inside cylinder? Say whether the door is timber, composite, metal or uPVC. Describe any separate latch and deadlock you normally use. You do not need to dismantle anything or know the technical name of the lock.

4. Have your postcode and permission ready

Give your full postcode privately when you call and confirm the entrance arrangements. Be ready to establish your authority to enter the property. If your identification is also locked inside, explain that at the start so the technician can discuss how permission will be checked. Do not publish photos of your keys or security arrangements in a public post.

5. Agree the plan before entry work

Ask about current availability, the proposed approach and the total quote. Confirm attendance, labour, parts and applicable tax, and ask how any change will be authorised. A closed latch and a failed deadlocked mechanism can need different work. Damage-free opening cannot be promised without assessment; discuss possible consequences and how the door will be secure afterwards.

General guidance cannot diagnose your door remotely. If there is an immediate danger to life, call 999.

Talk to us about your door.

Share the problem and postcode so we can discuss availability and suitable assistance.

Read about locked out

Another useful read.