Luke first appeared on television in the second quarter-final of Series 80 as the audience member who solved the conundrum LOVECRISP with the answer COVERSLIP, which also had SLIPCOVER as a valid solution.
Nearly 6 months later, Luke made his debut as a player on 5 December 2019 against one-game winner Zach Hart. Two nine-letter words and scoring points in every round helped him beat Hart convincingly and catapult to 139 points. His score broke Hamish Williamson's 10-year-old record for the highest ever score set by a challenger against a champion by 5 points and Elliott Mellor's 7-month-old record debut score by 8 points. Luke earned four more victories, while never falling below 113 points or failing to declare at least one nine-letter word, before stepping aside for the finals of Series 81.
Luke soon returned to the programme on 2 January 2020 to carry over his unbeaten run in the first heat of Series 82, kicking off the new year in style with spots of the nine-letter words MONTICULE and ESTIMATOR to win his sixth game with 143 points, the joint fourth-highest ever achieved in the "new" 15-round format. In the third show of the series, he became the standout provisional number 1 seed and only the second octochamp ever to join the "1,000 club", setting the second-highest ever cumulative score of 1,024 points (an average of 128 per game) after Mellor himself in the process.
Luke is the first contestant ever to declare a nine-letter word in all eight heat games. He declared 11 nines in total, more than any other contestant prior to the finals. His octochamp run also includes – for the first time ever on Countdown – a run of four consecutive scores over 125. He will almost certainly return in June 2020 to compete in the series finals.
|#||Date||Type||Contestant 1||Score||Contestant 2||Guest||Lex||Max|
|7220||5/12/2019||P||Zach Hart||26 – 139||Luke Johnson-Davies||Suzannah Lipscomb||Susie Dent||146|
|7221||6/12/2019||P||Luke Johnson-Davies||122 – 60||Janice Collins||Suzannah Lipscomb||Susie Dent||144|
|7222||9/12/2019||P||Luke Johnson-Davies||113 – 58||Jim Torpey||Suzannah Lipscomb||Susie Dent||143|
|7223||10/12/2019||P||Luke Johnson-Davies||124 – 28||John Lawlor||Suzannah Lipscomb||Susie Dent||144|
|7224||11/12/2019||P||Luke Johnson-Davies||126 – 59||Stephen Rooney||Suzannah Lipscomb||Susie Dent||133|
|7232||2/01/2020||P||Luke Johnson-Davies||143 – 51||Gagan Singh Gill||Tim Vine||Susie Dent||145|
|7233||3/01/2020||P||Luke Johnson-Davies||131 – 23||Nathan Nicholson||Tim Vine||Susie Dent||135|
|7234||6/01/2020||P||Luke Johnson-Davies||126 – 36||Carole Bramwell||Tim Vine||Susie Dent||139|