[2] The company was founded in February 1969 as Adagrove Limited but changed its name to McCartney Productions Ltd. in August 1969.

[3] One of the company's first projects was the purchase of the rights to a film adaptation of Rupert Bear in early 1970.

[4] MPL publishing owns a wide range of copyrighted material – covering nearly 100 years of music – by composers including McCartney, Buddy Holly, Carl Perkins, Jerry Herman, Frank Loesser, Meredith Willson, Harold Arlen and many others,[2] with songs, such as "Rock-a-Bye Your Baby with a Dixie Melody" (made famous by Al Jolson), "I'm Glad There Is You", "Blue Suede Shoes", and "That'll Be the Day".

I Love You" became part of the catalog in the late 2010s after McCartney reached a settlement with longtime Beatles catalog holder Sony/ATV Music Publishing allowing the co-author to reclaim his songs fifty-six years from their initial publication.

Additionally, MPL has acquired rights to other cover songs recorded by the Beatles, and solo recordings by John Lennon, McCartney, Ringo Starr, and Denny Laine as follows: In October 2006, the Trademark Registry in London reported that MPL Communications had started a process to trademark McCartney's name on saleable goods.