[6] At the 2018 European Junior Swimming Championships, held in Helsinki, Finland in July, Burras won two medals.

[7] In April 2022, at the year's British Swimming Championships, held at Ponds Forge in Sheffield, Burras won the gold medal in the 100-metre freestyle with a personal best time of 47.88 seconds.

[2][5] Burras started off on the first day of pool swimming competition, day two overall, at the 2022 World Aquatics Championships, held at Danube Arena in June in Budapest, Hungary, with a fourth-place finish in the 4×100-metre freestyle relay, helping achieve a new British record and English record time of 3:11:14 with a lead-off time of 48.09 seconds.

[13][14] Three days later, in the semi-finals of the 100-metre freestyle, he swam a personal best time of 47.63 seconds to set new British and English records in the event and qualify for the final ranking fourth.

[23][24][25][26] Leading off the 4×100-metre freestyle relay in the final of the event the following day, he swam a 48.39 to help achieve a time of 3:11.73 and win the silver medal.

[27][28] In the preliminaries of the 100-metre freestyle the following day, he was one of three swimmers representing England to qualify for the semi-finals, ranking twelfth overall with his time of 49.70 seconds.

[33] In the final, he finished in a person best time of 21.68 seconds to win the silver medal behind Ben Proud.

[45] On day three of the 2023 British Swimming Championships in Sheffield in April, he ranked fifth in the preliminaries of the 100-metre freestyle, qualifying for the final with a time of 48.77 seconds.