The landlord wanted the old fireplace covered over. After removing the old fire unite the opening is revealed.
Plasterboard is measured out & used to cover the opening fixing to the sides.
A skim plaster is applied and leveled to the existing fireplace surface and left to dry out. Four coats of white paint are then painted over.
There, job is done. Just need to finish off the hearth. I would advise adding an air vent to allow the chimney to breathe and prevent damp.