In early 1978, Juliff had trials with Widnes, and scored a try in a match against Wigan, but turned down an offer to join the club permanently.
[7] Juliff was signed by Wigan from Wakefield Trinity for £25,000 in 1982 (based on increases in average earnings, this would be approximately £110,200 in 2013).
He played as a second-half substitute in Wigan's 6–19 defeat by Widnes in the 1983–84 Challenge Cup Final during the 1983–84 season at Wembley Stadium, London on Saturday 5 May 1984.
He played as a second-half substitute (replacing Stand-off Chris Anderson) in Halifax's 19–18 victory over St. Helens in the 1986–87 Challenge Cup Final during the 1986–87 season at Wembley Stadium, London on Saturday 2 May 1987.
Juliff was the second player ever (and only Welshman) to represent 3 different teams (Wakefield Trinity, Wigan and Halifax) in the Challenge Cup Final at Wembley.