Are You Being Served? - Season 4 Episode 3 -

Mr.Rumbold is going away for one month to a sales and managerial seminar and he has decided that Mr.Grainger will be his replacement while he's gone. But as the shock of Mr.Grainger's new position wears off the staff, they soon realize that Mr.Grainger has taken advantage of his new position and is no longer their friendly colleague.