Roof box (Northwood Golf Course HA6)

Halfords, 138cm front to back, 96cm wide, 40 cm high, usual locking mechanism operated by turning key – except it needs repair, because something has slipped and gets in the way in one of the holes that the catches on the roof go into. For people who are good at this kind of thing, I’m sure it’s a simple repair. There’s an additional non-lockable catch at the front for extra safety.
Roof box is clean and otherwise in very good condition – not much used