White holds the Guinness World Record as the youngest player to compile a witnessed century break, a feat he accomplished in March 2001 when he was aged 9 years and 268 days.

He regained his tour card by qualifying for the main stage of the 2022 World Snooker Championship at the Crucible Theatre, becoming only the second amateur player (after James Cahill in 2019) to do so.

In July 2024, White was sentenced at Swansea Crown Court to a total of 3 years in prison, relating to two charges of assault occasioning actual bodily harm on his former partner.

He won a number of junior and later amateur events, and in 2006 became the youngest ever winner of the IBSF World Grand Prix, winning it aged 14.

[10] In his first professional match, the Masters qualifying, he shocked Leicester player Tom Ford 4–0, however he lost to eventual champion Barry Hawkins 5–2 in the following round.

In the qualifiers for the 2009 Shanghai Masters he beat former world champion John Parrott 5–0 (who later joked "I hope I retire before I have to play him...again" in reference to his earlier comment) before losing 5–3 to Mark Davis.

His best run during the season was to the last 48 of the UK Championship, with victories over Daniel Wells, Jin Long and Jamie Burnett before losing 9–4 to Liang Wenbo.

At the minor-ranking Euro PTC Event 3 White beat the likes of Tom Ford and Marco Fu to reach the quarter-finals, where he lost 2–4 to Andrew Higginson.

[18] White beat Craig Steadman and Ken Doherty to qualify for the UK Championship, the first time he had made it into the first round of a ranking event.

[19] He kept true to his word by beating Zhang Anda 10–5 and Andrew Higginson 10–4 (he trailed 1–3 but won nine of the next ten frames) to qualify for the first round of the biggest tournament in snooker, the World Championship.

In the first round of the Shanghai Masters, White came from 3–0 down against Neil Robertson to win 5–4 and went on to defeat Ryan Day 5–2 to make the quarter-finals.

[37] A pair of deciding frame victories over Ken Doherty and Stuart Bingham helped him to the last 16 of the China Open, but he was eliminated 5–1 by Robert Milkins.

[39] White reached the quarter-finals of the Australian Goldfields Open, the first ranking event of the season and played former schoolmate Jamie Jones.

[41] However, at the Gibraltar Open he whitewashed reigning world champion Stuart Bingham to reach his first European Tour final, but was defeated 4–1 by Marco Fu.

[43][44] After White lost 10–7 to Sam Baird in the first round of the World Championship he revealed that he suffers from depression and the stress of playing professional snooker can exacerbate it.

A 5–4 re-spotted black win over Jimmy Robertson qualified him for the Shanghai Masters and he beat Ricky Walden 5–4 and Judd Trump 5–3, before losing 5–1 to Stephen Maguire in the quarter-finals.

On 11 July 2024, White was sentenced at Swansea Crown Court to a total 3 years imprisonment for two charges of assault occasioning actual bodily harm against his former partner.