Answers to a few questions our customers often ask us.


For the highest degree of security, 3 star Kitemark is available across our entire range of patent protected cylinders. They can be keyed to differ, keyed alike or as part of a master key system.

View our range of TS007, 3 star British Kitemark cylinders here.

All CES locking systems comply with the most stringent requirements of DIN and/or EN.

How thick is your door?

Unlike many lock suppliers, we don’t just offer standard sizes. We manufacture all our cylinders in-house, to almost any size you can conceive.

You cannot. And more importantly, neither can anyone else.

We take key duplication protection very seriously.

Replacement key requests must be made direct to the original supplier, accompanied by a security reference card or sufficient evidence of you being the system owner.

Only lubricate where necessary and only with manufacturer approved cylinder spray or graphite. Do not use silicone based lubricant which may cause the cylinder to fail.

Download our care guide for your cylinders here.

No, it’s not. Patented is the securest form of locking system, ensuring you are protected by law from your keys being duplicated.


We offer a range which are tested and certified by the Dortmund Materials Testing Institute, in accordance with current standards (DIN 18250, DIN EN 12209 and DIN EN 179).

Our Fire Rated lock range also has the Warrington ‘Certifire’ certificate of approval.

Get in touch to discuss your building's security and authorised access issues