I never watched 'When the boat comes in' but couldn't escape the 'fishy in the dishy' song.
Bilko, Banana Splits & Get Smart, all great shows.
The Time Tunnel intro. (1966 - 67)..... I thought it was around longer than that.
Here's another one with the whole show attached to it...
The Goodies. (1st 50 secs is the intro) This was a funny show.