Clayton won his first game against Ben Walden thanks to Walden offering two invalid words. Clayton then beat Yvonne McKeon on another crucial conundrum, thanks in part to a choice of six small numbers. However, in his third game he couldn't match Richard Hunter who spotted the nine letter word UNDERLAYS to go into the conundrum 13 points ahead.
In Series 76, Clayton was readmitted to Countdown, prevailing over Tom Marlow 109 – 74 on his "second début". He would go on to win seven further games here, securing octochamp status with a total of 846 points and qualifying for the finals as No 2 seed. He then prevailed over #7-ranked fellow octochamp Lawrie Collingwood in his quarter-final. Subsequently, in the semis, he fought valiantly against #3 prospect Moose Rosser, but ultimately came unstuck when his adversary solved the tricky crucial conundrum LOSTMYCAP.
Away from Countdown, Clayton works as a manager in the bus industry and has held several operational and commercial posts, though he also enjoys driving in service every now and again!
He was introduced to the underground world of online Countdown following a chance meeting with series 52 contestant Jon Stitcher when they met backstage at the Great British Spelling Test.
Since relocating to the north-west of England, Clayton now organises tournaments in Chester, with the first one being CoChest on 19 November 2011. He also co-hosted the inaugural COHUD with James Robinson.
Clayton speaks fluent French and regularly participates in Des chiffres et des lettres tournaments in France.
In July 2014, Clayton appeared on the parent programme of Countdown, Des chiffres et des lettres, appearing on 3 programmes against Bernadette, a contestant from Belgium. He won the 2nd of the 3 shows, but lost the other two.
|#||Date||Type||Contestant 1||Score||Contestant 2||Guest||Lex||Max|
|3711||28/05/2004||P||Ben Walden||83 – 91||Jeff Clayton||Jeremy Beadle||Susie Dent||128|
|3712||31/05/2004||P||Jeff Clayton||85 – 65||Yvonne McKeon||Jeremy Beadle||Susie Dent||142|
|3713||01/06/2004||P||Jeff Clayton||52 – 75||Richard Hunter||Jeremy Beadle||Susie Dent||128|
|6546||23/03/2017||P||Tom Marlow||74 – 109||Jeff Clayton||Dr Phil Hammond||Susie Dent||124|
|6547||24/03/2017||P||Jeff Clayton||112 – 66||James Hemingray||Dr Phil Hammond||Susie Dent||132|
|6548||27/03/2017||P||Jeff Clayton||111 – 51||Louise McDonald||Dr Phil Hammond||Susie Dent||121|
|6549||28/03/2017||P||Jeff Clayton||116 – 60||Peter Finan||Nina Hossain||Susie Dent||155|
|6550||29/03/2017||P||Jeff Clayton||81 – 61||Martin McGrath||Nina Hossain||Susie Dent||120|
|6551||30/03/2017||P||Jeff Clayton||105 – 50||Susan Rooke||Nina Hossain||Susie Dent||123|
|6552||31/03/2017||P||Jeff Clayton||106 – 29||Amar Chotai||Nina Hossain||Susie Dent||120|
|6553||3/04/2017||P||Jeff Clayton||106 – 43||Hasit Raja||Nina Hossain||Susie Dent||132|
|6609||22/06/2017||QF||Jeff Clayton||86 – 68||Lawrie Collingwood||Suzi Perry||Susie Dent||121|
|6613||29/06/2017||SF||Jeff Clayton||84 – 88||Moose Rosser||Colin Murray||Susie Dent||121|