1. Rising Damp
2. Only When I Laugh
3. Directors Commentary
(Somebody else mentioned Directors Commentary not being a sitcom, but it's funny, and ITV has so few comedy jewels in it's crown it should get more mentions).
Top 3 ITV Sitcoms Page 3
1.On The Buses
2.Love Thy Neighbour
3. The Baldy Man
4. Men Behaving Badly
5.The New Statesman
Not much to choose from really. Erm... 'Benidorm' is a good laugh and I like watching repeats of 'Rising Damp' I suppose and that's about it.
1) Rising Damp
2) Only When I Laugh
3) Is It Legal
I was going to put Men Behaving Badly in that list but as the best series were when it moved to the Beeb it didn't seem fair.
1. Rising Damp
2. Shelley (but only when Peter Tilbury was writing)
3. Watching (though it outstayed its welcome)
Pretty much all the remaining places down to 10 would be filled by other Eric Chappell efforts, Duty Free being the best of the rest.
I don't like this thread. There are too many to choose from!
1. Rising Damp (with ease)
2. Men Behaving Badly (1st series)
3. Auf Wiedersehen, Pet (does this count? Series 1 was great and dead funny at times)
1. Shelley 2.Home To Roost 3.Rising Damp
Anyone else here remember 'It Takes A Worried Man'? Written by (and starring, I think) Peter Tilbury. Whose next project was the creation and writing of 'Shelley'. Early 80s? One or two series at the most. A top ITV sitcom.
Keith Waterhouse wrote a sitcom set in an ad agency early 80s whose name I forget - started promisingly but went off the boil. Was Lesley Ashe in it? God knows. And while we're on Waterhouse he also made a TV spin-off of his hit movie 'Billy Liar'. Mid 70s I think, remember enjoying that.
'The Upper Hand' which inexplicably ran for 793 series and was watched by 92 million people a week, was quite good when it started.
And of course comedy writing God Jack Rosenthal had two hit shows in the early 70s - 'The Lovers' starring Paula Wilcox and Richard Beckinsale, and 'The Dustbinmen' with Bryan Pringle. Both top shows. And although it's not a sitcom, Coronation Street frequently hit glorious comic patches from the 60s to the 90s. Thanks to Rosenthal and Paul Abbott, among others.
It Takes A Worried Man was 3 series apparently! Looks quite an interesting one. I'll have to see if I can find that.
The Upper Hand ran for so, so very long because it was a direct adaptation of an American series. When you've only got to hire one writer to make minor script changes to be relevant to a British audience, and reasonably high viewer numbers, you're going to continue pumping out episodes as long as possible!
Billy Liar - https://www.comedy.co.uk/tv/billy_liar/
The Lovers - https://www.comedy.co.uk/sitcoms/the_lovers.shtml
Both (and The Dustbinmen, which we don't have a guide for yet) are available on DVD. 
Nice work Inspector Aaron. No mention of the Waterhouse ad agency show though, you're slacking.
I see from your guides that Rosenthal didn't write The Lovers, although he did write the movie version. The sitcom was written by Geoffrey Lancashire. Who I think is/was Sarah's dad.
The Happy Apple?
That's the one.
And for a bonus point what classical piece of music was used for the theme tune.
Ok there's no points on offer, I just wanted to know which one it was
This is like saying what are your top three diseases?