Kiern Tyler Jewiss (born 3 July 2002) is a British racing driver who last competed in the 2025 British GT Championship for 2 Seas Motorsport. He is the winner of the 2018 F4 British Championship and the 2022 Porsche Carrera Cup Great Britain. In 2025, he won the British GT Championship alongside Charles Dawson.
Career
Karting Jewiss had a decorated karting career after making his competitive debut in 2010, he won eleven karting titles, with ten of them being in the United Kingdom, including winning the Super One Series two times.https://lgmseries.com/archive/full-championship-points-2013/
In 2016, Jewiss stepped up to the OKJ for his only international year in karting, which was also his final full-time before making his car racing debut. He started the season with winning the WSK Champions Cup with Riccardo Kart Racing, Jewiss also competed in the WSK Super Master Series and the WSK Final Cup, but came 18th in the former and sixth in the latter.
Jewiss also made his debut in the CIK-FIA European Championship, where he finished tenth in the overall standings, and then the CIK-FIA World Championship, where finished in seventh.
To round off the year, Jewiss competed in the Super One Series and finished the championship in ninth.
2017 was Jewiss' last competitive outing in karts, where he made his OK debut, at the 22° South Garda Winter Cup for Forza Racing where he came in 17th.
Ginetta Junior Championship
Jewiss made his car racing debut in the 2017 Ginetta Junior Championship for Douglas Motorsport. Despite only getting one win at Knockhill, he got twelve podiums and three pole positions throughout the season, where he finished his maiden racing season fourth in the championship standings with 542 points, also being the highest finishing rookie with a sizeable margin.
Jewiss finished runner-up to the end of the season Ginetta Junior Winter Series, with two wins, three pole positions, one fastest lap, three podiums and 120 points amongst the four races.
F4 British Championship
Following his successful year in Ginetta's, Jewiss made his single-seater and Formula 4 debut in the 2018 F4 British Championship with Double R Racing alongside Paavo Tonteri and Sebastián Álvarez.
After a win heavy first half of the season, the latter half was less successful, as Jewiss only took one win but maintained a consistent enough points streak to win the title in his rookie Formula 4 year and his 71 points margin was the biggest gap of the championship winner and the championships runner-up until 2024, when Deagen Fairclough won the championship with a 222.5 points margin.
Jewiss collected six wins, two pole positions, seven fastest laps and eighteen podiums throughout the thirty races in the series. He was also a finalist of the 2018 McLaren Autosport BRDC Award.
BRDC British Formula 3 Championship
2019
With his championship exploits, Jewiss moved up to the Formula 3 level BRDC British Formula 3 Championship for the 2019 season, where he reunited with his Ginetta team Douglas Motorsport. His teammates for the season were Ulysse de Pauw and future IndyCar Series driver Benjamin Pedersen.
The first half of Jewiss' championship had consistent points finishes, but he only managed to get two third places – at Snetterton Circuit and Donington Park – while the final half of the season was more successful, getting back-to-back podiums at the third race of Circuit de Spa-Francorchamps and the first race of Brands Hatch. Not long after, his first Formula 3 win at the third rounds of Brands Hatch, where he got another back-to-back podium and first pole position at the first race at Silverstone Circuit, where he came second.
Jewiss also got another second place and pole position at the third race of the Silverstone round. The final round of the series at Donington Park also followed a similar pattern, where he came second in the first and third races. Jewiss finished the championship 4th in the standings with one win, two pole positions, two fastest laps, nine podiums and 438 points.
2020
Jewiss renewed his partnership with Douglas Motorsport for the 2020 season and grabbed with second win in the series at the first race of the opening round at Oulton Park. He would not get a single podium throughout the rest of the races he competed in and left the team and the championship halfway through the season, where he finished 13th in the drivers championship with 211 points.
Porsche Carrera Cup Great Britain
2021
After exiting single-seaters, Jewiss moved to one-make Porsche Carrera Cup racing, driving in the Porsche Carrera Cup Great Britain for the 2021 season with Team Parker Racing alongside Harry King. He set an ambitious target of winning the title in his debut season.
Jewiss got his first podium in the series in his debut race at Brands Hatch with a second place, after two fourth places, he got his maiden win at the second race of the second round at Snetterton Circuit.
At Oulton Park, Jewiss came fifth in the first race and got his first pole position in the series at the second race, where he would convert it to his second win of the year. Knockhill proved to be difficult as he got his only retirement of the year at the second race. Jewiss claimed his third win at the second race of Croft Circuit and came third in the next race at Silverstone Circuit, getting his first back-to-back podiums.
In the penultimate round at Donington Park, Jewiss got his only double podium, with a third place in the first race and a final win to add to his tally in the second race. He came fifth and fourth in the final round at Brands Hatch, and finished third in the overall standings with four wins, one pole position, seven podiums and 104 points.
2022
Jewiss contested the 2022 Porsche Carrera Cup Great Britain for a second season with Team Parker Racing.
The first round at Donington Park didn't go as expected, coming fourteenth in the first race but getting a podium in the second round, salvaging the last races poor performance. What followed was a podium streak – including a win at Brands Hatch – lasting for six races.
At the next round at Snetterton Circuit, Jewiss converted a pole position to a win, and after two podiumless races, he would win four races in a row, which were the final races of the championship. He won the championship ahead of Adam Smalley with six wins, four pole positions, seven fastest laps, eleven podiums and 141 points.
GT3
2023
With Team Parker Racing, Jewiss moved to the GT World Challenge Europe Endurance Cup for the 2023 season, where he competed in the Bronze Cup.
Jewiss only managed two points finishes, and didn't enter the final round of the championship at Circuit de Barcelona-Catalunya. Jewiss ended the championship in 35th with two points in the Bronze classification.
2024
Jewiss' only racing activity for the year for a one-off cameo for Steller Motorsport in the second round of the 2024 Le Mans Cup at Circuit Paul Ricard partnering Darren Malkin, where they came sixth in the race.
2025
Jewiss would find a seat for the 2025 season in the form of the British GT Championship driving for 2 Seas Motorsport and partnering Charles Dawson.
Karting record
Karting career summary SeasonSeriesTeamPosition 2010 Buckmore Park Winter Championship - Honda Clubman Cadet Ktj Racing1st Bayford Meadows Winter Series - Honda Cadet1st 2011 Trent Valley Kart Club - Honda Cadet 27th Lydd Winter Championship - Honda Cadet Ktj Racing1st Buckmore Park Winter Championship - Honda Cadet1st Super One Series - Honda Cadet 11th 2012 Trent Valley Kart Club - Honda Cadet 12th Henry Surtees Commemorative Meeting - Honda Cadet Ktj Racing1st Kartmasters British GP - Honda Cadet2nd ABkC 'O' Plate - Honda Cadet3rd Formula Kart Stars - Honda Cadet1st Super One Series - Honda Cadet3rd 2013 LGM Series - IAME Cadet 10th Super One Series - Honda Cadet Next-Gen Motorsport1st Super One Series - IAME Cadet 5th Kartmasters British GP - IAME Cadet 16th Kartmasters British GP - Honda Cadet3rd 2014 LGM Series - IAME Cadet 4th Super One Series - Honda Cadet2nd Kartmasters British GP - IAME Cadet1st Kartmasters British GP - Honda Cadet2nd Super One Series - IAME Cadet AIM Motorsport2nd 2015 Kartmasters British GP - Mini Max1st Rotax Max Euro Trophy - Junior Max Strawberry Racing 9th Super One Series - Mini Max1st Rotax Max Wintercup - Junior Max 8th 2016 WSK Champions Cup - OKJ Ricciardo Kart Racing1st WSK Super Master Series - OK Junior 18th CIK-FIA European Championship — OKJ 10th CIK-FIA World Championship — OKJ Forza Racing 7th WSK Final Cup - OK Junior 6th Super One Series - OK Junior 9th 2017 22° South Garda Winter Cup - OK Forza Racing 17th
Racing record
Racing career summary SeasonSeriesTeamRacesWinsPolesF/LapsPodiumsPointsPosition 2017 Ginetta Junior ChampionshipDouglas Motorsport26131125424th Ginetta Junior Winter Series423131202nd 2018 F4 British Championship Double R Racing30627184451st 2019 BRDC British Formula 3 Championship Douglas Motorsport2412294384th 2020 BRDC British Formula 3 Championship Douglas Motorsport14100121113th 2021 Porsche Carrera Cup Great Britain - Pro Team Parker Racing1641071043rd 2022 Porsche Carrera Cup Great Britain - Pro Team Parker Racing16647111411st 2023 GT World Challenge Europe Endurance Cup Team Parker Racing400000NC GT World Challenge Europe Endurance Cup - Bronze0000235th2024 Le Mans Cup - GT3 Steller Motorsport10000821st 2025 GT World Challenge Europe Endurance Cup - Silver Steller Motorsport 1 0 0 0 1 24 17th GT World Challenge Europe Endurance Cup 0 0 0 0 0 NC2 Seas Motorsport20000 GT World Challenge Europe Endurance Cup - Bronze0000633th British GT Championship - GT3 9 3 2 0 4 173.5 1st 2026 GT World Challenge Europe Endurance Cup2 Seas Motorsport GT World Challenge Europe Endurance Cup - Bronze GT World Challenge Europe Sprint Cup 8 0 0 0 0 0 NC GT World Challenge Europe Sprint Cup - Bronze 0 4 1 4 69.5 3rd British GT Championship - GT3 1 0 0 0 0 0 NC† † As Jewiss was a guest driver, he was ineligible for points. * Season in progress
Complete Ginetta Junior Championship results (key) (Races in bold indicate pole position) (Races in italics indicate fastest lap) Year Team 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 DC Points 2017 Douglas Motorsport BHI1 BHI2 DON1 DON2 DON3 THR11 THR12 OUL1 OUL2 CRO1 CRO2 CRO3 SNE1 SNE2 SNE3 KNO1 KNO2 ROC1 ROC2 ROC3 SIL1 SIL2 SIL3 BHGP1 BHGP2 BHGP3 4th 542
Complete F4 British Championship results (key) (Races in bold indicate pole position) (Races in italics indicate fastest lap) Year Team 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Pos Points 2018 Double R Racing BRI1 BRI2 BRI3 DON1 DON2 DON3 THR1 THR2 THR3 OUL1 OUL2 OUL3 CRO1 CRO2 CRO3 SNE1 SNE2 SNE3 ROC1 ROC2 ROC3 KNO1 KNO2 KNO3 SIL1 SIL2 SIL3 BHGP1 BHGP2 BHGP3 1st 445
Complete BRDC British Formula 3 Championship results (key) (Races in bold indicate pole position) (Races in italics indicate fastest lap) Year Team 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Pos Points 2019 Douglas Motorsport OUL1 OUL2 OUL3 SNE1 SNE2 SNE3 SIL11 SIL12 SIL13 DON11 DON12 DON13 SPA1 SPA2 SPA3 BRH1 BRH2 BRH3 SIL21 SIL22 SIL23 DON21 DON22 DON23 4th 438 2020 Douglas Motorsport OUL1 OUL2 OUL3 OUL4 DON11 DON12 DON13 BRH1 BRH2 BRH3 BRH4 DON21 DON22 DON23 SNE1 SNE2 SNE3 SNE4 DON31 DON32 DON33 SIL1 SIL2 SIL3 13th 211
Complete Porsche Carrera Cup Great Britain results (key) (Races in bold indicate pole position) (Races in italics indicate fastest lap) Year Team 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pos. Points 2021 Team Parker Racing BHI1 BHI2 SNE1 SNE2 OUL1 OUL2 KNO1 KNO2 CRO1 CRO2 SIL1 SIL2 DON1 DON2 BHGP1 BHGP2 3rd 104 2022 Team Parker RacingDON1DON2BRH1BRH2OUL1OUL2KNO1KNO2SNE1SNE2THR1THR2SIL1SIL2BRH1BRH21st141
Complete GT World Challenge Europe results GT World Challenge Europe Endurance Cup (key) (Races in bold indicate pole position) (Races in italics indicate fastest lap)