Plan the key arrangement before changing locks
If you want several B36 entrances updated, list the doors and who uses each one. Explain whether you prefer separate keys or want to discuss a compatible shared-key arrangement. Include any existing sticking or loose fittings. The proposed hardware and key plan need checking against each opening instead of assuming all cylinders and handles are interchangeable.
About this B36 enquiry area
For Castle Bromwich and Smith's Wood, tell us if more than one door needs work. Where suitable, compatible cylinders can be discussed as part of a consistent key arrangement.