On the itinerary it should have been itemised and noted as not working etc. this covers the landlord and also records it as their property.
"Issue is I don’t want to mess with it"
I'd agree you shouldn't and that leaves you with 3 options
either speak to the housing association/LL about having it repaired - guessing it will be a no judging by your comment thus far
ask if you can arrange for it to be looked at, at your cost - as above keep a record of this
leave it and hope it won't go off
Sure someone will confirm but I think it's either this
https://www.replacementkeys.co.uk/bkg-845-key.html
Or this
https://www.replacementkeys.co.uk/kentec-901-key.html?gclid=Cj0KCQiAqY3zBRDQARIsAJeCVxNgArOhxQ-J2_uLUuuP9-ZZN3XR_lSIW07-Xb0jkVkshHo8JbOVo5YaAsSWEALw_wcB
Once you've removed the old one of course
Lol, all he does is ask questions on there, no issue with intruder but asking about fire makes me wonder. Tell him, like most things in Brighton they can be back doored quite easily...
Codes are a complete waste of time nowadays imo unless it's something like cotd.
@PJ your mate was asking about defaulting a hkc on FB, I guessed one of yours?