The new BS8621:2007 standard mirrors the BS3621:2007 but is for ‘escape’ locks. Especially relevant for entrance doors in multi-residential and other buildings. Secure By Design. Backset: 60mm.
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Door Lock Guard Latch Bolt 90 Degree Stainless Steel Toggle Latch Sliding Barn Door Lock Wine Cabinet Closet Right Angle Lock
Aliexpress UK
The Double Locking Nightlatch is designed to replace most existing front door locks. The bolt can be held in the withdrawn position (only) with the use of the snib feature. This product is ideal for solid panelled doors.
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Door Foot Stopper Holder Stainless Steel Floor Stop Buffer Catch Latch Doorstop Home Toilet Room Door Latch Furniture Hardware
Aliexpress UK
The ERA Double Locking Nightlatches are designed to replace most front door lock, and are available with a 40mm and 60mm backset. The main lock bolt is “automatically” deadlocked when the door is closed, preventing the main bolt being retracted by a credit card.
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Door Latch No-Drill Thickened Universal Snap Lock Anti-Theft Security Door Catch Bathroom Cabinet Lock Window Door Latch
Aliexpress UK
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Cat Door Holder Latch Adjustable Prevents Dog Enter Elastic Gate Lock Flex Latch Strap Dog Door Stopper Pet Gate Supplies
Aliexpress UK
This complete Nightlatch Lock assembly is a really nice quality set and has had very little use as the condition of the original keys will testify. British Standard Kite Marked. New fixing Hardware, instructions and 9 Keys Included.
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Stainless Steel Door Security Lock Buckle Window Latch Heavy Duty Thickened Sliding Gate Tower Bolts Latch Catch Home Hardware
Aliexpress UK
The Era Saracen Split Spindle Set works by allowing the internal and external handle to work independently of each other. The internal handle will continue to work as normal and will not require a key.
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KK&FING Stainless Steel Automatic Latchs Anti-theft Door Bolt Anti-lock Door Buckle Spring Door Latch Thickened Door Locks
Aliexpress UK
The nightlatch is available with the option of having a deadlocking or non deadlocking facility on the external cylinder- if the “Outside Deadlock” facility is required, remove the screw from the back of the lock case before installation and discard it.
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Portable Door Lock Latch Anti-theft Lever Lock Removable Door Blocker Adhesive Security Latch No Drill Manual Door Stop Doorstop
Aliexpress UK
The ERA Double Locking Nightlatches are designed to replace most front door lock, and are available with a 40mm and 60mm backset. The main lock bolt is “automatically” deadlocked when the door is closed, preventing the main bolt being retracted by a credit card.
eBay
Stainless Steel Door Latch Gate Safety Lock Sliding Mechanism Sliding Bolts Latch Toilet Door Lock Hardware Hasp Lock
Aliexpress UK