Yale 1109 Night Latch Replacement Cylinder Chrome-Plated 33mm - Screwfix
XFORT® Chrome 40/50T Thumb Turn Euro Cylinder Lock (90mm), Euro Door Barrel Lock with 3 Keys, Anti-Bump, Anti-Drill, Anti-Pick Door Lock with Key, High Security for Wooden, UPVC and Composite Doors. :
Euro lock cylinder too long? | Screwfix Community Forum
Smith & Locke Straight Barrel Door Bolt Satin Nickel 40mm - Screwfix