If your door lock is malfunctioning, the gearbox is usually the culprit. Replacing it is a straightforward process that involves removing just a few screws. Mila uPVC Door Lock 35mm Backset Gearbox.
eBay
304 Stainless Steel Hidden Door Handle Lock Keyless Recessed Door Lock Single Cylinder Deadbolt Invisible Lock for Furniture
Aliexpress UK
Window Handle Keys. Extra Cut Keys. Finger Operated Shoot Bolts. Roller Shutter Locks. Industrial Keys. Keys Cut To Code. EN1303 classification 16000C52 Both ends feature specially designed tumblers and hardened pins to protect against bumping, picking and drilling Sacrificial break points to hamper attempts to snap and remove the cylinder, Clearly identified as a TS007 1 star cylinder.
eBay
Black Door Handle Door Handle Lock Square Channel Privacy Mask Interior Bedroom Room Bathroom Lock Home Lock
Aliexpress UK
Avocet Door Lock Silver Plate 35mm. With over 40 years of experience in the industry, our team has done it all. Includes Latch & Deadbolt. Top Roller Position: 725mm. Door Handles Door Locks Door Hinges Window Handles Supplies.
eBay
Secret Door Lock Invisible Door Concealed Door Handle Safe Handles Interior Black Bedroom Locks Knob Hidden Hide Hardware Home
Aliexpress UK
Euro Cylinder Barrel UPVC Front Door Lock 6 Pin Anti Snap Mila BreakSafe.
eBay
25mm-45mm Stainless Steel Door Lock Bathroom Round Ball Door Knob Set Handle Passage Lock Contemporary Internal Door Knob Pair
Aliexpress UK
Refurbished Hook box & Deadbolt gearboxes from used and cancelled order UPVC & Composite doors. 📦DISPATCH SCHEDULE.
eBay
Single/Double Door Glass Lock Zinc Alloy Showcase Cabinet Door Cylinder Sliding Glass Push Door Locks for Furniture Hardware
Aliexpress UK
Triangle Outdoor Shade Sail Patio Suncreen Awning Garden Sun Canopy 98% UV Block. HEAVY DUTY SUN SHADE SAIL GARDEN PATIO AWNING CANOPY 98% UV BLOCK WATERPROOF. The Lock cylinder guard against theft function effectively improved the reliability and safety of the lock,is your choose for security.
eBay
Wooden Door Lock Hole Opener Kit Lock Mortiser Door Fitting Kit w/3pcs Cutters & Accessories Door Slotter Mortising JigTools
Aliexpress UK
ERA Saracen Gearbox Centre Case Lock 35mm Backset 92pz for UPVC Doors. - Thick Bolt Version.
eBay
Brass Replacement Mortise Rim Cylinder Door Night Latch Lock Cross Shaped Nightlatch + 6 Keys
Aliexpress UK
UPVC Window Restrictor. Child Lock Restrictor Safety Catch. Our added security thumb-turn locks will fit all uPVC doors. They can also fit to Aluminium, Patio and Composite doors. Once fitted you simply turn the knob at the end of the cylinder to lock or unlock your door from the inside, you will only need the key to lock your door from the outside.
eBay
KK&FING Zinc Alloy Left and Right Door Latch Door Buckle Push-pull Door Thickened Surface Mounted Door Bolt Lock Buckle Hardware
Aliexpress UK