That ground had been based on plaintiffs ' allegations of threats of murder posed by the defendant to the neighbouring occupiers; abuses hurled at neighbouring occupiers by his sons; whistling at neighbouring occupiers by the defendant 's sons; spitting against the walls and in the common staircase area of the building by the defendant 's sons; obstructions offered by the defendant, his wife, sons and servants to the neighbouring occupiers to reach the common terrace of the building by a staircase and removal by 476 them of aerials of radios of the tenants in the other flats of the building,, which had been fixed above the common terrace; obstructions offered to the landlords and their workers to inspect the common terrace; unauthorised errection by the defendant in the common terrace area certain machinery and running it during nights causing disturbance to sleep of neighbouring occupiers and also unauthorised used by the defendant of the water in common over head storage tanks in the common terrace area for his business purposes depriving other tenants of the normal use of such water.