Cook, 38, retired from Test cricket in 2018 but continued to play with Essex for five more seasons.

The all-time leading run-scorer for England is not seeking an extension to his contract at Chelmsford.

In a statement, Cook said, “Cricket has been so much more than my job.”.

I have been able to experience places I never thought I would, be a part of teams that have accomplished things I would have never dreamed of, and, most importantly, develop deep friendships that will last a lifetime.”

In comparison to the eight-year-old boy who first played for Wickham Bishops Under-11s to now, I end with a strange sense of sadness mixed with pride. Above all, I am immensely happy.

Following Essex’s second-place finish in the County Championship season, Cook had yet to make a decision.

Despite McGrath’s hopes, Cook informed Essex on Thursday evening that he would be retiring. Having given everything I possibly could have to be the best player I could be, it is the right time for this part of my life to come to an end,” Cook added.

I will always be grateful for the opportunity to play cricket. Now I hope the Bedfordshire Farmers will find room for a has-been ‘all-rounder’ somewhere in their lower order.”

In 2003, Cook made his professional debut for Essex Cricket Board against Essex in the Cheltenham and Gloucester Trophy, followed by a season in the County Championship for Essex.