The Dave Clark Five - Their single "Glad All Over" knocked the Beatles' "I Want to Hold Your Hand" off the top of the UK Singles Chart in January 1964; it peaked at number 6 in the United States in April 1964. "Over And Over" was a number 1 single in the United States for the group in December 1965.
This was the first Dave Clark hit I remember and may have been their first. Truth be told, I liked the DC5 better then the Beatles, never mind Lennon and McCarthy were superior song writers. I think it was Denny Payton's sax and Mike Smith's organ and gravelly vocals I liked. That gave the band a more R & B feel.