Fifty Years On, was the penultimate episode in Series Four 1976 of the British Sitcom Are You Being Served? This episode used the Jarrow March as a minor plot device. 1976 (MCMLXXVI) was a leap year starting on Thursday. ... Are You Being Served? was a long-running British sitcom broadcast from 1972 to 1985. ... During the Great Depression in the United Kingdom, the people of the North East England, many of whom were miners and shipworkers, suffered even more than the rest of the country from the prevailing unemployment and poverty. ...