Complex sentence: It was the band's only hit single in the UK, for which there was a Top of the Pops performance for which the band were introduced by Noel Edmonds, who made the pun "I wonder if Can will get into the top tin!".
Split into simpler sentences: It was the band's only hit single in the UK, which led to an appearance on Top of the Pops. The band were introduced by Noel Edmonds, who made the pun "I wonder if Can will get into the top tin!".