You have to remember that the "British Invasion" in the 60's wasn't limited to music. Not by a long shot.
Lost amidst the emergence of bands like The Beatles, Rolling Stones, Moody Blues, and Herman's Hermits, and solo acts like Petula Clark & Cliff Richard, there were a few television shows (i.e. The Avengers, The Saint), one of which would actually be produced in America.
Today, David Frost is being remembered for his famous interview with Richard Nixon, which was immortalized in the movie, "Frost-Nixon", just a few years back. But Frost, who passed away a few days ago, had a daytime talk show that ran for about 2-3 years, and distributed by Group W (Westinghouse), the same company that at the time packaged Mike Douglas' chat-fest. In fact, in my area, the two shows aired a few hours apart on the same channel!
Frost employed jazz icon Billy Taylor as his musical director, and took on the same interview subjects as everyone else, including, in separate installments, ex-Beatles John Lennon (w/Yoko Ono, of course) and Ringo Starr. Here, from 1969, Frost introduces the Rolling Stones, who perform "You Can't Always Get What You Want":
After the series ended, Frost produced a series of interview specials that aired on PBS. Sooner or later, we'll get around to looking at "Frost-Nixon".