Since Williams Grand Prix Engineering was formed in 1977 there have been more than 40 drivers that have for the team but there have been almost as many that have tested but never driven in a race for them.

Here we bring together all those that have Tested but not Raced.

Thanks to @UnracedF1, Alex Ware, Carl Lawrence and others for helping me put this together. This is a work in progess so if you have more detail or know of others please let us know.

1989

James Hunt

It’s incredible to think of 1976 drivers world champion in a Williams but he did do a test. Read more in the excellent article here.

James Simon Wallis Hunt (29 August 1947 – 15 June 1993) was a British racing driver who won the Formula One World Championship in 1976. After retiring from racing in 1979, Hunt became a media commentator and businessman.

Beginning his racing career in touring car racing, Hunt progressed into Formula Three, where he attracted the attention of the Hesketh Racing team and soon came under their wing. Hunt's often reckless and action-packed exploits on track earned him the nickname "Hunt the Shunt" (shunt, as a British motor-racing term, means "crash"). Hunt entered Formula One in 1973, driving a March 731 entered by the Hesketh Racing team. He went on to win for Hesketh, driving their own Hesketh 308 car, in both World Championship and non-championship races, before joining the McLaren team at the end of 1975. In his first year with McLaren, Hunt won the 1976 World Drivers' Championship, and he remained with the team for a further two years, although with less success, before moving to the Wolf team in early 1979. Following a string of races in which he failed to finish, Hunt retired from driving halfway through the 1979 season.

After retiring from motor racing, he established a career as a motor racing commentator for the BBC. He died from a heart attack aged 45.

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1991

Tiff Needel & Johnny Robinson

More details to follow.


1994

Emmanuel Collard

Emmanuel Collard tested with the Williams FW16C in December 1994 at Paul Ricard.

Emmanuel Collard (born 3 April 1971) is a French professional racing driver. He is a former member of the Porsche Junioren factory team, but also drives for other marques.

Born in Arpajon, Essonne, Collard is the winner of the Le Mans Series for Pescarolo Sport in 2005 and 2006 with Jean-Christophe Boullion and in 2011 for Pescarolo Team with Julien Jousse. He co-drove the overall winner of the 2008 12 Hours of Sebring.

He also was the Formula One test driver for Prost Grand Prix in 1997, Benetton in the late 1990s and Ligier-Ford in 1990.

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1998

Aluizio Coelho

Got to test for Williams because he won the FRenault in 1998.

Aluizio Coelho (born August 21, 1974 in Rio de Janeiro, Brazil) is a racing driver. He was British Formula Renault champion during the 1998 British Formula Renault season, and progressed into British Formula 3 in 1999 with the Promatecme UK team with future Formula One champion Jenson Button as his teammate. He competed in all rounds, finishing 9th in the championship on 45 points, but that was only just over a quarter of Button's impressive tally of 168. Since then, he has returned to his native Brazil, competing in the SudAm F3 and GT3 Brazil with limited success.

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Max Wilson

Wilson meanwhile earned a Williams testing berth after a strong 1997 F3000 rookie season.

Max Wilson (born August 22, 1972 in Hamburg, West Germany) is a racing driver of Brazilian parentage.

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2003

Nelson Piquet jr

In 2003 Williams ran a ‘battle of the F1 sons’ driver shootout with the ‘winner’ getting to be their test driver. Sons of former Williams champions Nelson Piquet and Keke Rosberg took part with Nico Rosberg ultimately ‘winning’.

Nelson Angelo Tamsma Piquet Souto Maior (born July 25, 1985), also known as Nelson Piquet Junior or Nelsinho Piquet, is a Brazilian stock car racing driver and former Formula One and Formula E driver where he was champion in the 2014–15 season. He currently competes full-time in the Brazilian Stock Car Pro Series, driving the No. 33 Toyota Corolla E210 for Motul TMG Racing.

He also races a Rebellion R-One LMP1 in the FIA World Endurance Championship.

The son of three-time Formula One world champion Nelson Piquet, he was signed as test driver for Renault Formula One team for the 2007 season, and was promoted to the race team for 2008, before being dropped midway through the 2009 season. After losing his drive, it emerged that he had, under instruction from senior members of the team, crashed deliberately at the 2008 Singapore Grand Prix to help his teammate, Fernando Alonso, win the race. The resulting scandal became one of the most significant in motor sport history, and ultimately saw a permanent end to Piquet Junior's career in Formula 1.

Piquet also finished runner-up in the 2006 GP2 Series, fourth in the 2014 Global RallyCross Championship, and seventh in the 2012 NASCAR Truck Series.

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Mark0 Asmer

Tested with the Williams FW25 in 2003.

Marko Asmer (born 30 July 1984) is an Estonian racing driver, who won the British Formula 3 Championship title in 2007. Asmer is also the first Estonian to test a Formula One car, having tested for the Williams BMW team in 2003, after just half a season of car racing in British Formula Ford. Asmer's father is a former racing driver Toivo Asmer, who was Estonian Minister of Regional Affairs between 1999 and 2003.

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2005

Sebastian Vettel

Many young drivers get their first taste of F1 at Williams. Here’s Sebastian Vettel in 2005 testing for the team who declared that it was “an unbelievable experience”.

Sebastian Vettel (German pronunciation: [zeˈbasti̯a(ː)n ˈfɛtl̩] (listen); born 3 July 1987) is a German racing driver who competes in Formula One for Aston Martin, having previously driven for BMW Sauber, Toro Rosso, Red Bull, and Ferrari. Vettel is one of the most successful drivers in Formula One history and has won four World Drivers' Championship titles, which he won consecutively from 2010 to 2013. Vettel is the youngest World Champion in Formula One; he also has the third-most race victories (53) and podium finishes (122), and fourth-most pole positions (57).Vettel started his Formula One career as a test driver for BMW Sauber in 2006, making a one-off racing appearance in 2007. As part of the Red Bull Junior Team, Vettel appeared for Toro Rosso later that year and was kept as a full-time driver for 2008. Vettel was promoted to Red Bull in 2009. With Red Bull, Vettel won four consecutive titles from 2010 to 2013, the first of which made him the sport's youngest World Champion, setting the records for the most consecutive race wins (9) and race wins in a single season (13). Vettel signed for Ferrari for 2015 and became Mercedes' and Lewis Hamilton's closest challenger in two title fights in 2017 and 2018, although he finished both years as runner-up. He left Ferrari to race with Aston Martin for the 2021 and 2022 seasons, before announcing his plans to retire from Formula One at the end of the 2022 season.

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Andy Priaulx

Tested with the Williams FW27 at Rockingham in 2005.

Andrew Graham Priaulx, MBE ( pree-OH born 8 August 1974) is a British professional racing driver from Guernsey. In 2019 he raced for Ford Chip Ganassi Team UK in the FIA World Endurance Championship, and Cyan Racing Lynk & Co in the FIA World Touring Car Cup, having been a former BMW factory driver.He is a European Touring Car Championship champion, three times World Touring Car Championship champion and the only FIA Touring Car champion to win an international-level championship for four consecutive years (2004 to 2007). The previous record was Roberto Ravaglia's three successive championships (1986–1988).

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2006

João Paulo de Oliveira

João Paulo de Oliveira tested in 2006 with the FW28 or FW27.

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2008

Dani Clos

In the FW30 on the streets of El Savlador.

Daniel Clos Álvarez (born 23 October 1988) is a Spanish professional racecar driver who was, in 2012, the test driver for the now defunct HRT Formula One team.

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2009

Jonathan Kennard

More details to follow.

Jonathan Kennard (born 26 June 1985 in Tunbridge Wells, England) is a British Professional racing driver. He has won 2 series titles, Formula Palmer Audi in 2004 and the FPA Winter Trophy the previous year in 2003.

He was also a test driver for the WilliamsF1 team in 2009.

He is race winner in both the National class (2005) and Championship class (2007) of British Formula Three. He also ran at the Zolder F3 Masters in 2007 and the Macau Grand Prix in 2007.

In 2009 he raced in the Superleague Formula for A.S. Roma in the 2009 season. He returned to the series driving for CR Flamengo at the Monza round of the series while Enrique Bernoldi was on FIA GT duty.

In 2010 he raced in the Le Mans Series for the Kruse Schiller Motorsport Team in the LMP2 Class using a Lola Judd. He also finished the Le Mans 24hrs on his first attempt with the same team.

He was the FIA Formula Two Test Driver from 2010 to 2012.

From 2016 to present, he races in Historic Formula One and Endurance Racing Legends in Le Mans Prototypes. Most recently in 2019, he secured pole position for the Silverstone Classic in a Pescarolo LMP1 and dominated the race weekend taking two wins.

In 2020 he raced in the Le Mans 24hrs in the LMP2 Class driving an Oreca 07 for IDEC Sport, finishing 11th in class and 15th overall.

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Sheikh Khalid bin Hamad Al-Thani

Tested with the Williams FW31 at Losail 19 December 2009.


2010

Dean Stoneman

His prize drive came in the Abu Dhabi young driver test on November 16, and he was fifth fastest on his day in the Williams FW32. Ahead of him was Daniel Ricciardo in the title-winning Red Bull RB6, future FE star Oliver Turvey in the race-winning McLaren MP4-25, 2019-20 FE champion Antonio Felix da Costa in Force India’s car, and Sauber’s reserve driver Esteban Gutierrez. All of the above were either in vastly quicker cars or were considerably more experienced, and senior personnel at Williams remarked on how impressed they were with Stoneman’s approach and performance.

“One of the main reasons for doing F2 was the F1 test at the end,” Stoneman tells Formula Scout 10 years later.

“But throughout that season, it was a correct choice in my career to go that route, to be seen by the right people. It was a Williams-built car at the time, a Williams F1 test, and that’s one of the main reasons I went that route. A great championship as well. Beating Jolyon Palmer to the title as well, which was another great achievement.

Dean Colin Stoneman (born July 24, 1990) is a British racing driver. Stoneman was the 2010 Formula Two champion.

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2013

Susie Wolff

As offical test driver she drove in FP1 on several occasions in 2013 and 2014.

Suzanne Wolff (née Stoddart; born 6 December 1982) is a British former professional racing driver.

Her parents, John and Sally Stoddart, owned a motorcycle dealership in Oban and her father raced bikes competitively. She progressed through the ranks of motorsport, starting off in karting, before graduating to Formula Renault and Formula Three, then moving to the Deutsche Tourenwagen Masters (DTM) to compete for Mercedes-Benz. In 2012, she was signed by Williams in Formula One to work as a development driver and made history at the 2014 British Grand Prix at Silverstone, becoming the first woman to take part in a Formula One race weekend in 22 years. On 4 November 2015, Wolff announced her retirement from motorsport, last competing at the Race of Champions held at the end of November. In 2016, Wolff joined Channel 4 in the UK to be an analyst for their Formula One coverage.

In 2018, she joined Venturi Racing in Formula E as Team Principal. In 2021, she was promoted to the role of CEO. In August 2022 following the Season 8 finale in South Korea, she announced her departure from Venturi and Formula E.She lives in Monaco, with her husband Toto Wolff, Team Principal and CEO of the Mercedes AMG Petronas Formula One Team. The two were married in October 2011. In October 2016, Wolff announced on Twitter that she was pregnant with their first child. On 10 April 2017, she gave birth to a boy.

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2015

Alex Lynn

Development driver Alex Lynn testing at Barcelona in 2015.

Alexander George Lynn (born 17 September 1993) is a British racing driver. He most recently competed in Formula E, driving for Mahindra Racing in the 2021 season, winning the second race of his home ePrix in London. Lynn has also competed full-time in the 2019–20 FIA World Endurance Championship driving for Aston Martin Racing, has won the 2017 12 Hours of Sebring, and finished sixth in the 2015 and 2016 GP2 Series.

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2017

Luca Ghiotto

in the FW40 at the Hungaroring in 2017 mid-season testing.

Luca Ghiotto (born 24 February 1995) is an Italian racing driver currently racing in the Formula 2 with DAMS.

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Gary Paffett

Williams Racing simulator driver Gary Paffett tested at the Bahrain International circuit in April 2017.

Gary Paffett (born 24 March 1981 in Bromley) is a British racing driver. Having become a household name in the DTM, following fifteen years in the series and two championship wins, Paffett moved onto Formula E for the 2018/19 championship, after it was announced in 2017 that Mercedes would no longer be taking part in DTM. Paffett was also a test driver for the Williams Formula One team, having previously worked in a similar role at McLaren for a number of years, during the team's successful title winning years. Paffett progressed through the ranks of karting and junior formulae in the United Kingdom, winning the McLaren Autosport BRDC Award in 1999. He now lives in Ousden, Suffolk, England.

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2020

Roy Nissany

At the 2020 Spanish Grand Prix Roy Nissany became Israel’s first Grand Prix driver when he took part in the free practice 1 session as the teams official test driver.

Roy Nissany (Hebrew: רוי ניסני; born 30 November 1994) is an Israeli racing driver currently competing in the Formula 2 Championship with DAMS. He is also currently a Formula 1 test driver with Williams Grand Prix Engineering. He is the son of former racing driver Chanoch Nissany.

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