Having watched Some vans can make you deaf and the discovery that Compo had a son,I was thinking about the amount of couples without children in the series.Glenda and Barry,Howard and Pearl,Clegg and Edith,Sid and Ivy and I think Nora and Wally?. Also couples where having children was never mentioned like Truly and the former Mrs Trulove, Smiler and Mrs Hemingway, Billy and Mrs Hardcastle, Entwistle etc. Given the longevity of the series its a wonder there weren't more story lines where sons or daughters of all these regulars,long lost or otherwise might have appeared over the years.