[7][8] He made his League Two debut for Crewe at Gresty Road in a 3–2 defeat to Bury on 29 September 2009, replacing Joel Grant as a substitute in the 80th minute.

On 7 April he made another appearance at Wembley, as the Alex beat Southend United 2–0 in the Football League Trophy final; he was an 83rd-minute substitute for Max Clayton.

He was one of four players offered a contract termination by new manager Paul Sturrock following Yeovil's relegation into League Two at the end of the season.

[21] In July 2015, Leitch-Smith signed a 12-month deal with League One side Port Vale after agreeing to leave Yeovil.

[26] After scoring his sixth goal of the season in a 1–1 draw with Scunthorpe United at Vale Park on 12 December he was named in the Football League Paper's team of the day.

[27] He scored four goals in four games in January to go into double figures for the season to earn himself a nomination for the PFA fans' Player of the Month award for League One.

[29] Leitch-Smith signed with League One side Shrewsbury Town in June 2016, along with former Port Vale teammates Ryan McGivern and Louis Dodds.

[30] He scored his first goal for the club in the first minute of a first-round League Cup tie against Championship side Huddersfield Town, with Shrewsbury going on to win 2–1.

[32] He was limited to five goals in 12 starts and nine substitute appearances throughout the 2016–17 campaign, and was not allocated a squad number ahead of the following season as he was not in the club's future plans.

[36] In January 2018, the loan agreement was extended to the end of the 2017–18 season after "Dee" manager Neil McCann was impressed by the link-up play he made with striker Sofien Moussa despite him being unable to secure a regular place in the starting eleven.

[41] Despite only scoring six goals and missing half the season he ended the campaign as the club's top-scorer and went on to sign a new two-year contract at the Globe Arena.

[55] Leitch-Smith returned to Nantwich Town on 11 August 2023,[56] and made 11 appearances during the early part of the 2023–24 season, scoring four goals, before leaving to join Stafford Rangers.

[59] Though Leitch-Smith lacks natural athleticism and pace, he is an intelligent and creative attacker with good technical skills and a high work rate.