Dropped UPVC door — key won't turn
The single most common UPVC callout across Oxford. Over years of use, hinges settle and the door drops a few millimetres — the multipoint hooks no longer align with the keeps and the key physically can't rotate. We often see euro cylinder failures on communal HMO entrance doors from high daily use across multiple tenants as a related signal. Hinge adjustment + strike plate realignment usually fixes it without replacing hardware.
Our approach Adjust hinges and realign keeps first; replace gearbox or cylinder only if mechanical damage is present.