70's or early 80's Sitcom long shot

[Mortartube]

I recall a sitcom that began with a guy getting the sack from his job, he buys flowers to break it to his wife gently who tells him she's leaving him. I think there may have been a few more bad luck things occur. He then tries to commit suicide by jumping from a railway bridge, as he jumps whilst a train approaches, the hood of his coat gets caught on a bolt sticking out of the wall of the bridge and he is left hanging in mid-air. Dear John springs to mind but I am totally unsure. Any help would be appreciated. Thanks.

[4getmenot]

Dear John was late 80's

http://www.imdb.com/title/tt0090416/usercommen ts

[Wop/tpo]

Dear John written by John Sullivan 14 episodes and one special 1986-87

[Postdog]

I used to love dear john, and it definitely wasn't that. Can't say it rings any bells.

[alleyandapu]

was it this

http://en.wikipedia.org/wiki/Chance_in_a_milli on

[Mortartube]

It doesn't sound familiar, but thank you.

[mccfluff]

was it on bbc as a list of sitcoms here, one might stike a cord!
http://en.wikipedia.org/wiki/Category:BBC_tele vision_sitcoms