A mortice Deadlock lock is best suited to work with wooden doors. This mortice Deadlock is 5 lever. The most secure is a 5 lever mortice Deadlock lock. A mortice lock is set inside the door itself to ensure a flush finish rather than being surface mounted.
eBay
Thumbturn is used inside the property for convenient locking without the key and ideal for designated fire escape doors. 3 Standard Yale keys.
eBay
1 × Yale Platinum 3 Star Thumb Turn Cylinder Lock. Upgrade your door security with theYale Platinum 3 Star Thumb Turn Cylinder Lock. ✔ Convenient thumb turn for easy locking from inside. Fixing screws & instructions.
eBay
Polished Brass Anti-Snap TS2007 Thumbturn Cylinder by Yale. Tested by BSI, it has been awarded the British Kitemarked TS2007:2014 3 star accreditation, which is identified on the face of the cylinder as an effective visual deterrent.
eBay
The center of the keyhole must be 60mm from the edge of the door. The overall width of the lock body to be fitted to the inside of the door is 92mm. Inside handle can be deadlocked by a reverse turn of the key in the outside cylinder after closing the door.
eBay
The Yale YALP2PM444CH Door Security Bolts are finished in chrome, has a 2 year guarantee and is supplied with 1 x key Pack of Two The Yale PM444 series security door bolts are concealed (mortice fixed) into the door with a bolt which throws into the door frame. Operated by using the key supplied giveing added securiy and extra protection to your home.
eBay
Yale Lock Multi-Purpose Door Bolt White Finish V-8K116-WE Crow
eBay
This Yale P1B has a hardened case finished in Brasslux. Locks with a 40mm backset are normally used where there is restricted space, such as on a narrow glass panelled door. Yale's High Security P1 Double Nightlatches are suitable for timber external doors and are ideal for glass panelled doors.
eBay