In 2016, Will’s career moved towards top level sports cars with Will competing in the FIA World Endurance Championship with the Jota G-Drive Team. Will scored two wins in the WEC in Fuji and Shanghai and a second place in Le Mans 24 Hours in the LMP2 category.
Will also accepted an invitation to join the top Audi GT squad, WRT, in the Blancpain GT Series alongside Rene Rast, with the team scoring three podiums throughout the season. Will remained for the next season, securing 2nd place in the Sprint Championship alongside Markus Winkelhock.
The highlight of the season however, was a class win in the premier endurance race in the world: a Le Mans 24 Hour Class Victory in the JMW Ferrari 488 alongside Dries Vanthoor and Amateur, Rob Smith.
Following this win, Will was retained by WRT for a third year alongside Dries achieving wins and podiums throughout the year, finishing 4th in the Championship.
That year Will was approached to join the Panis Barthez Competition Team for their European Le Mans Championship, again in LMP2 in a Ligier. Whilst at a slight disadvantage to the dominant Oreca machines, the team achieved positive results and Will was asked to remain for the 2019 season.
In 2018, Will also accepted an invitation to return to the Jota Jackie Chan DC Racing LMP2 squad for the FIA World Endurance Championship for part of the 2018/19 Super Season. Winning in Sebring and taking another podium, ensured Will maintained his successful results run with the team, totalling two wins and three more podiums across six outings.