Paddy Lowe has formally announced his departure from Williams, three months after he took a leave of absence.
Lowe has been on leave since the 5th March after facing calls to step down when Williams failed to reach pre-season testing on time.
After a difficult 2018, pressure was on Lowe to produce a competitive car for this year but the team missed the first two and a half days of pre-season testing and have spent the first eight races confined at the back of the grid.
Lowe has left the company with immediate effect and has also stepped down from the board of directors.
In a statement, Lowe said: “After a period of careful reflection I have reached the decision that I will not return to work at Williams,”.
“I wish all my previous colleagues the very best to meet the challenges ahead, which I am sure they will do. I would especially like to thank the Williams fans who are so supportive.”
Deputy Team Principal Claire Williams added: “We understand and respect the decision Paddy has reached and wish him well for the future.”
This was Lowe’s second stint at Williams having previously worked for the Grove based team between 1987 and 1993.
He worked for McLaren until 2013 and then moved to join Toto Wolff at Mercedes, achieving four Driver’s and Constructor’s titles.
Williams appointed Lowe in 2017 in a bid to resurrect the team back to its former glory years, however, the two cars produced under Lowe’s management have seen the team fall to last in the Constructor’s championship.
Since Lowe’s leave of absence Williams have called upon Patrick Head’s assistance and he has returned to the team temporarily in an advisory role.