Inside the Williams and Mercedes factories, where F1 cars come to life, the workforce is putting its heart and soul into the winter tasks now well underway. There are just 14 weeks between the 2023 season and the first race of 2024 in Bahrain. In this series, we have been allowed rare access into the heart of the operations. And at the Williams facility, in rural Oxfordshire, we are about to go on a VIP tour to learn how to build an F1 car.

At Brackley, home to the Mercedes’ F1 team, the factory is united by a common purpose. Mercedes dominated F1 from 2014. But when new technical rules came in at the start of 2022, Red Bull overtook Mercedes as the fastest team on track. The desire to return Mercedes to the top runs deep - and for a very significant reason.

The motivation to get the 2024 car right is massive for both teams - but first Williams and Mercedes have to absorb the lessons from last season’s car. And each team has a very specific problem that it now wants to put right.

At Brackley, work continues around the clock on the new Mercedes and the Williams factory is also working at full capacity - with extra shifts and overtime standard at this crucial time in the car build. The factories are moving up a gear, because a new car for a new season - that’s a chance to start again.

F1: Back at Base is an IMG Production for the BBC Narrated by Joseph Fiennes Co-hosts & Executive Producers are Holly Samos and Sarah Holt The Producers are Alasdair Cresswell, Joe Aldridge and Jack Winstanley. The Senior Producer is Ollie Kneen The Executive Producer for IMG is Steve Tebb The Showrunner is Holly Samos The Story Editor and Scriptwriter is Sarah Holt The Commissioning Editor at the BBC is Stevie Middleton