 He made his debut the following day, as an 81st-minute substitute in a 2–0 home win over Hitchin Town.Ahead of the 2018–19 season, Lappin joined Wroxham as a player coach.Lappin was capped four times by the Scotland national under-19 team (2001), two times by the under-20 team (2002 to 2003) and ten times by the under-21 team (2004 to 2005).