Short answers, pulled from the story.
Jimmie Nicol played drums for the Beatles during eight concerts between the 4th of June 1964 and the 14th of June 1964. He replaced Ringo Starr who fell ill with tonsillitis on the 3rd of June 1964 while the band prepared for an Australasian tour.
Brian Epstein gave Jimmie Nicol a cheque for five hundred pounds and a gold Eterna-matic wrist watch inscribed with appreciation. His debts later totaled four thousand six hundred sixty-six pounds after he declared bankruptcy nine months after being a temporary Beatle.
The last confirmed sighting of Jimmie Nicol occurred outside his rented first-floor flat in Kentish Town during the early 2010s. Rumors of his death circulated in 1988 but a newspaper published in 2005 confirmed he was alive and well living in London.
Jimmie Nicol formed Jimmy Nicol and the Shubdubs which released two singles that failed to achieve commercial success. He joined the Swedish group the Spotnicks in 1965 and toured the world twice with them before leaving the group in 1967 to spend time in Mexico.
Paul McCartney remarked on Jimmie Nicol while walking his dog Martha with Hunter Davies in early 1967 which inspired the song Getting Better on Sgt Pepper's Lonely Hearts Club Band. McCartney referenced Nicol again during Let It Be sessions in January 1969 despite asking if they could contact him later.