I'm still watching (and enjoying) Life on Mars on BBC1 on Monday nights, but becoming increasingly doubtful that boozers in Manchester in 1973 would 1) have had so many hand pumps on the bar and 2) would have been offering real ales from other parts of the country like Greene King IPA and Charles Wells bitter.
I was in London at the time, and I'm sure it was the late 70s when Greene King beers first appeared (I think at the station bar at Liverpool Street).
Are there any Mancs of a certain age that can verify that their city was in advance of the capital in carrying forward the CAMRA crusade? As far as I remember, 1973 was the height of the (Watney's) "Red Revolution"!