Yale P-M562-PB-67 PM562 British Standard 5 Lever Mortice Deadlock, High Security, Visi Pack, Suitable for External Doors, 2.5 Inch/64 mm, Polished Brass - Door Dead Bolts - Amazon.com
Legge L9MF Primary Multi-function Mortice Lock SC | Access Hardware | Door Hardware
Heavy Duty - mortice lock
The security of Mortice locks - S Fretwell & Sons - Doncaster Locksmiths
T14- Mortice Locks 45mm & 60mm Backset - Handle House