Born in Whitehaven, Arnold earned the nickname 'Boxer' as a child after he received a pair of boxing gloves as a gift; in his own words, "I wore them everyday [sic?], the name just stuck."
He played professional rugby league for both Workington and Whitehaven and has the unusual honour of still being loved by both sets of fans, despite the fierce rivalry that exists between them. He transferred between the clubs for a fee of £30,000. He earned a reputation for being a hard man on the pitch due to his insatiable appetite for battle and fearless style of play no matter who the opposition. He received a career ending neck injury in 1983.
County Cup Final appearances
Arnold 'Boxer' Walker played scrum-half/halfback in Workington Town's 11-16 defeat by Widnes in the 1976 Lancashire County Cup Final during the 1976–77 season at Central Park, Wigan on Saturday 30 October 1976, played scrum-half/halfback, scored 2-drop goals, and was man of the match in the 16-13 victory over Wigan in the 1977 Lancashire County Cup Final during the 1977–78 season at Wilderspool Stadium, Warrington on Saturday 29 October 1977, played scrum-half/halfback, and was man of the match in the 13-15 defeat by Widnes in the 1978 Lancashire County Cup Final during the 1978–79 season at Central Park, Wigan on Saturday 7 October 1978, and played scrum-half/halfback in the 0-11 defeat by Widnes in the 1979 Lancashire County Cup Final during the 1979–80 season at The Willows, Salford on Saturday 8 December 1979.
Honoured at both Workington Town, and Whitehaven
Arnold 'Boxer' Walker is both a Workington Town and Whitehaven Hall Of Fame Inductee.
Outside of Rugby League
Arnold 'Boxer' Walker still resides in his home town of Kells, Whitehaven.