Steven Jeffrey Seddon (born 25 December 1997) is an English professional footballer who plays as a left-back for Scottish Premiership club Motherwell.

[14] He made his Football League debut two days later in the starting eleven for the match at home to Cambridge United; he was substituted at half-time as his team went on to lose 1–0.

[21] He started twice more in the league,[10] and provided the assist for Álvaro Giménez' first goal for the club, in a 2–0 win against Barnsley,[22] but played no part in the matchday squad after the end of August.

[23] Seddon was a unused substitute for two of Birmingham's first three matches of the 2020–21 season,[10] before returning to AFC Wimbledon on 24 September on loan for the rest of the campaign.

[26] Birmingham's head coach, Aitor Karanka, recalled Seddon to assess his readiness to play a part in the first team, particularly as regular left-back Pedersen was injured.

[10] Incoming head coach Lee Bowyer selected him on the bench for his first match in charge,[28] gave him a few minutes at the end, and then included him in the starting eleven for the visit of Swansea City on 2 April.

Despite a rash first-half booking (attributed by Bowyer to nerves and enthusiasm) and replacement at half-time by the experienced George Friend, Seddon started three of the next five matches as Birmingham secured their Championship survival,[29][30] and the club took up the one-year option on his contract.

After 42 minutes, he "arrived at the back post to meet Ryan Williams's cross and lashed an effort" past the goalkeeper to open the scoring; the match ended 1–1.

[36] He went straight into the starting eleven for the next day's match at home to Bristol Rovers, but lasted only until first-half stoppage-time when he was stretchered off with a head injury after colliding with his own goalkeeper.