From Mirfield, West Yorkshire, he first appeared just before his 15th birthday, losing the game to eventual 4th seed Ian Buckley. He was asked back 6 weeks later for a special episode against another junior contestant Lucy Guile. This was broadcast in 2004.
In 2009, he reappeared on the show as an adult, now aged 21, managing to win two games before a narrow defeat of one point in the third.
Something of a Countdown addict, Robinson regularly returns to the studio to watch shows being recorded live.
In 2010, he began attending unofficial Countdown tournaments, including Co:Lon 2010 and CoLei3. He then attended COLIN 2011 and CoLei4 in 2011, finishing 2nd in both events to Kirk Bevins and Jack Hurst respectively. He then finsihed 4th at both CoNot 2011 and Co:Lon 2011, before winning the inaugural Countdown in Chester, CoChest in November 2011.
In 2012, he attended COLIN 2012, finishing in 8th place (his lowest finish to date), before winning the inaugural Countdown in Reading, CO:REA in April. He followed that up a week later by winning CoLei5, beating Richard Priest (who he happened to beat in the final at CoChest) in that final. He then appeared at CobliviLon, finishing 6th, followed by an appearance at the first COEDI in Edinburgh, reaching the final, before losing to home favourite, Innis Carson.
After being on Countdown, Robinson auditioned for many other game shows, with no success, until he appeared on Pointless in October 2011 and January 2012. He then appeared on Breakaway on 11 October 2012, Mastermind on 6 December 2013, the revival of Fifteen to One on 23 and 24 April 2014, Eggheads on 5 January 2016, and made three appearances on Hive Minds later in 2016. He returned to Fifteen to One on 5 June 2017.
|#||Date||Type||Contestant 1||Score||Contestant 2||Guest||Lex||Max|
|3454||4/04/2003||P||Ian Buckley||93 – 66||James Robinson||Magnus Magnusson||Susie Dent||118|
|S20||30/08/2004||S||Lucy Guile||66 – 76||James Robinson||Bob Bevan||Alison Heard||116|
|4800||21/04/2009||P||Karyn Cooke||71 – 105||James Robinson||Tim Vine||Susie Dent||129|
|4801||22/04/2009||P||James Robinson||91 – 74||Louise Bambury||Tim Vine||Susie Dent||133|
|4802||23/04/2009||P||James Robinson||86 – 87||Patrick McCurdie||Tim Vine||Susie Dent||121|