Hurrah! I would never have got it without the clue - I thought The Hollies packed up much earlier than '69.
They're still going. Without ever having a break.
Shows how much I know. A bit of gooogling tells me that Graham Nash left in '68, which is what I'm probably thinking about.
Not Gerry & the Pacemakers.
ETA: Gerry & the Pacemakers had three number one hits, How Do You Do It?, I Like It and (of course) You'll Never Walk Alone, all in 1963.