Belling Classic 100 GT range cooker, 100cm wide, gas only (IP4)

Belling Classic 100 GT range cooker, 100cm wide, (height 90cm, depth 62cm).
Old and used. Will need a good clean, but functional. However, some of the cooker control knobs are missing or loose, as seen on the pictures, and will need replacement.
The hob has 7 gas burners, and there are 2 ovens, one grill, one drawer.
All is gas operated, the electric cable is only for the lights, timer, and spark.
According to safety instructions, grill is to be used only with the grill door open. Grill will cut out when grill door is closed. This is intended operation, not a fault.
The slightly white powdery appearance on some photos is dust reflecting in the sunlight. If given a good wipe it is full black.