Locks explained
How to check a British Standard kitemark on your lock
Where to find the kitemark, and what the numbers on your lock actually mean.
Blog
Locks explained
Guides from our locksmiths on locks explained.
Latest guides
All locks explained guides
Locks explained
Do I need BS 3621 locks for insurance?
What most UK home insurers ask for, and how to check your lock before you claim.
Locks explained
What is a British Standard lock?
BS 3621, TS007 and Sold Secure, explained in plain English.
Locks explained
The best British Standard lock for your front door
Which lock suits a wooden, uPVC or composite front door, and why.