Complex sentence: They did two package tours which were popular at the time one with the Honeycombs and Gene Vincent and another one with Gene Pitney with the Rockin Berries and compered by the then unknown duo Sid and Eddie later to become Little and Large.
Split into simpler sentences: They did two package tours which were popular at the time. One with The Honeycombs and Gene Vincent and another one with Gene Pitney with The Rockin' Berries and compered by the then unknown duo Syd Little and Eddie Large later to become Little and Large.