Pinkney started his professional career at Ryedale-York before signing for Keighley Cougars in 1993. While at the Cougars, Pinkney scored over 100 tries, and broke the club record for most tries in a season twice in consecutive seasons. In 1997, he joined Sheffield Eagles. Nick Pinkney played Right-wing, and scored a try in Sheffield Eagles' 17-8 victory over Wigan in the 1998Challenge Cup final during Super League III at Wembley Stadium, London on Saturday 2 May 1998.