Below is a guide to the most commonly used locking systems found on external doors. To help with lock identification, make a note of any markings on the door end-plate (where the latches stick out the door). This will also tell you whether your lock meets the required insurance standard BS3621 or CE1121 (kite marked).
EMERGENCY RESPONSE - CALL 07967 667702
Is your door fitted with a larger keyhole -
Mortice Lock
Euro Cylinder
Does your lock profile look like this -
This is a Rim Lock/Latch
Does your lock profile look like this -
This is a Euro Double Cylinder
Does your lock profile look like this -
This is a Rim Cylinder
Does your lock profile look like this -
This is a Mortice Lock
Does your lock profile look like this -
This is a UK Oval Cylinder (mainly aluminium doors)
Does your lock profile look like this -
This is a Sash Lock
Take a picture of your lock with your mobile phone