Question: Nigel Walley was the bass player of which skiffle group?

Context paragraphs:
Johnny Martyn: Johnny Martyn, born Johnny Martyn Booker (16 July 1934 in London, England – 19 March 2007 in Vancouver, British Columbia), was a musician and coffee bar manager.  He was one of the original members of The Vipers Skiffle Group.  Fellow musician and Vipers member Wally Whyton were members of The Original Soho Skiffle Group.  He was born in London, England and died in Vancouver, British Columbia.

Vince Eager: As a teenager, he formed the Harmonica Vagabonds, later the Vagabonds Skiffle Group, with Roy Clark, Mick Fretwell, and bassist Brian Locking.  The group reached the final round of a televised "World Skiffle Championship" in 1958, and were offered a residency at the 2 I's Coffee Bar in London.  There, they were signed by impresario Larry Parnes, who took Taylor into his stable of performers, and gave him one of his characteristic stage names, Vince Eager.  After touring and releasing an EP as Vince Eager & the Vagabonds, Clark and Fretwell returned home.  Vince Eager and Brian Locking remained in London, Locking performing with Marty Wilde before joining the Shadows.

The Walkers (Dutch band): The Walkers were a popular Dutch band of the 1970s.  The group began as a skiffle group in 1963 and continued in mainstream pop music till 1989.

The Vipers Skiffle Group: The Vipers Skiffle Group – later known simply as The Vipers – were one of the leading British groups during the skiffle period of the mid to late 1950s, and were important in the careers of radio and television presenter Wally Whyton, coffee bar manager Johnny Martyn, wire salesman Jean Van den Bosch, instrument repairer Tony Tolhurst, journalist John Pilgrim, record producer George Martin, and several members of The Shadows.

Nigel Walley: Christopher Nigel Walley (born 30 June 1941) is a former golfer and tea-chest bass player of The Quarrymen, which included John Lennon.  Walley later became manager of the group.  His surname has often been spelt incorrectly as 'Whalley' in numerous books and on web pages.

Skiffle: Skiffle is a music genre with jazz, blues, folk and American folk influences, usually using a combination of manufactured and homemade or improvised instruments.  Originating as a term in the United States in the first half of the 20th century, it became popular again in the UK in the 1950s, where it was associated with artists such as Lonnie Donegan, The Vipers Skiffle Group, Ken Colyer and Chas McDevitt.  Skiffle played a major part in beginning the careers of later eminent jazz, pop, blues, folk and rock musicians and has been seen as a critical stepping stone to the second British folk revival, blues boom and British Invasion of the US popular music scene.

Jean Van den Bosch: Jean Van den Bosch, guitarist and vocalist, was one of the original three members of The Vipers Skiffle Group along with Wally Whyton and Johnny Martyn.  They were later joined by Tony Tolhurst on bass and John Pilgrim on percussion and washboard.  Originally a wire salesman before he joined, Van den Bosch left the group in 1958.  He was described by fellow Viper, John Pilgrim, as having a "deep baritone voice and percussive guitar style"

Bill Bailey Skiffle Group: The Bill Bailey Skiffle Group made seven appearances on BBC Radio's "Saturday Skiffle Club" (only Johnny Duncan and Charles McDevitt had more slots on the show) yet no record company ever signed them up.

The Quarrymen: The Quarrymen (also written as "the Quarry Men") are a British skiffle/rock and roll group, formed by John Lennon in Liverpool in 1956, which eventually evolved into the Beatles in 1960.  Originally consisting of Lennon and several schoolfriends, the Quarrymen took their name from a line in the school song of Quarry Bank High School, which they attended.  Lennon's mother, Julia Lennon, taught her son to play the banjo and then showed Lennon and Eric Griffiths how to tune their guitars in a similar way to the banjo, and taught them simple chords and songs.

Avon Cities Skiffle Group: Avon Cities Skiffle Group featuring Ray Bush were founded in Bristol, England, during 1952 by members of the Avon Cities Jazz Band.  The group became a part of the skiffle craze that swept the UK in 1957 and made several recordings and appeared on BBC Light Programme shows.  Their big hit was named Green Corn, originally by Huddie Leadbetter,a blues singer and twelve-string guitar player.

Supporting paragraphs: Nigel Walley The Quarrymen
Answer: The Quarrymen