He then played three First Division games for Norwich City in 1973–74 as John Bond's "Canaries" suffered relegation.
[8] In October 1975, he scored four goals in a 6–1 Southern League Cup win over Banbury United despite missing a penalty kick.
[9] Kellock impressed at Rockingham Road and returned to the Football League with Peterborough United after he was signed for a nominal fee in August 1979.
[10] Kellock was re-signed by Peter Morris, now manager at Southend United, who were relegated out of the Third Division in 1983–84.
[1] He had a "stunning impact" on his debut; scoring two goals in a 5–1 win over Exeter City at Vale Park on New Year's Day.
[1][15] He was a regular in the side, scoring four goals in 11 Fourth Division games in 1984–85, before he strained a hamstring in March.
[1] After refusing new terms, in June 1985, he signed for Halifax Town, who were managed his former boss Mick Jones.
[1] He went on to score 17 goals in 43 Fourth Division appearances for the "Shaymen" in 1985–86, finishing as the club's top-scorer.