He raced for the VC Londres cycling club from 2012 to 2016, and remains an honorary member.

[5] He rode in the men's team pursuit event at the 2018 UCI Track Cycling World Championships, winning a gold medal.

[6][7] In August 2018 it was reported that Hayter had joined Team Sky as a stagiaire until the end of the year.

[5] That month he also competed at the European Track Championships in Glasgow, where he took bronze medals as part of the British team pursuit squad,[8] the Madison pairing alongside Oliver Wood[9] and an individual gold in the omnium.

In August 2024 it was announced that Hayter would be leaving Ineos Grenadiers and would move to Soudal–Quick-Step from 2025 on a two-season contract.