How to choose a secure door lock

Choosing a secure lock for your door

The most important components are the cylinder and the lock case. Look for tested standards such as BS EN 1303 for cylinders, TS 007 and SS312 Diamond for anti‑snap protection. For mortice locks, choose BS 3621 marked products.

A professional locksmith can advise on the right combination of security and convenience for your property, including registered key systems, thumb‑turn cylinders for fire safety, and compatible furniture/escutcheons to complete the installation.

For a tailored recommendation, request a quote and we’ll help you select the best option for your door and insurance requirements.