Bob Eager wrote:

Dave Plowman wrote:

Andy Burns wrote:

Euro, Yale or some other type?

Not sure of the brand. Big and shiny chrome and looked pretty new. An
expensive brand like Chubb, I'd guess.

Not much you can do if they don't want it touched

Could be a Yale like mine:

https://www.safe.co.uk/products/yale-pbs2-auto-deadlocking-nightlatch-40mm.html

Previously I had one of these (was Chubb back then)

https://www.safe.co.uk/products/union-4l67e-deadbolt-nightlatch-60mm.html