Hardingham is one of only two contestants known to have selected 8 consonants and 1 vowel in a letters game (the other being Matthew Francis of Series 12). He did this twice, in rounds 3 and 6 of his only game.
Between 2000 and 2001, he also made six appearances on Fifteen to One reaching the grand final of the 27th and 28th series during 2000, in both cases alongside two other Countdowners, Helen Grayson and Dag Griffiths.
|#||Date||Type||Contestant 1||Score||Contestant 2||Guest||Lex||Max|
|650||12/10/1987||P||Philip Hardingham||35 – 52||Ian Cook||Brian Johnston||Catherine Clarke||73|