Debuting the day after octochamp Heather Styles completed her run, Barnard began his Countdown career with the 9 letter word DELATIONS, running out the winner 94-69 against Susan Holden. 7 more wins, including 3 centuries followed to see Barnard rack up 771 points. He returned in the finals as No. 2 seed, defeating Chris Marshall in the quarter finals to set up a semi-final clash with No. 3 seed Styles. In a tight game which saw both players level after 14 rounds, it was Styles who solved BLUEINDIA to take the place in the final.
Barnard returned in 2016 for Championship of Champions XIV. In the first round, he came up against Series 68 runner up Andy Platt. In a nip and tuck game which saw the lead change hands several times, Barnard held a two point advantage going into the conundrum but lost 98 – 90 to Platt. Of the fifteen shows in the championship, this was the only one to not feature a century score.
|#||Date||Type||Contestant 1||Score||Contestant 2||Guest||Lex||Max|
|5592||20/11/2012||P||Susan Holden||69 – 94||David Barnard||Gyles Brandreth||Susie Dent||128|
|5593||21/11/2012||P||David Barnard||87 – 54||Snigdha Tiruvuru||Gyles Brandreth||Susie Dent||129|
|5594||22/11/2012||P||David Barnard||111 – 70||Arthur Sharpe||Gyles Brandreth||Susie Dent||123|
|5595||23/11/2012||P||David Barnard||100 – 55||Chris Tracey||Gyles Brandreth||Susie Dent||119|
|5596||26/11/2012||P||David Barnard||107 – 22||Stella Nanziri-Mbuggu||John Inverdale||Susie Dent||128|
|5597||27/11/2012||P||David Barnard||92 – 69||Ian Williams||John Inverdale||Susie Dent||116|
|5598||28/11/2012||P||David Barnard||91 – 39||Michael Henning||John Inverdale||Susie Dent||128|
|5599||29/11/2012||P||David Barnard||89 – 55||Virginia Arena||John Inverdale||Susie Dent||140|
|5609||13/12/2012||QF||Chris Marshall||63 – 108||David Barnard||Dave Spikey||Susie Dent||132|
|5613||20/12/2012||SF||Heather Styles||91 – 81||David Barnard||Alistair McGowan||Susie Dent||117|
|6280||6/01/2016||CP||Andy Platt||98 – 90||David Barnard||Gloria Hunniford||Susie Dent||129|