England's all-time leading Test run scorer Alastair Cook will retire from international cricket at the end of the series against India, the ECB has confirmed.

The 33-year-old has made 12,254 runs in the five-day format and is the only Englishman to have scored more than 9,000.

He made his England debut against India in 2006, scoring an unbeaten century in the second innings in Nagpur, and was his country's captain for a record 59 Tests before vacating the role in 2017.

The announcement of Cook's retirement comes one day after England wrapped up a Test series victory over India with a match to spare, and the opener's final international appearance is set to be at the Oval in a contest which starts this week.

"After much thought and deliberation over the last few months I have decided to announce my retirement from international cricket at the end of this Test series against India," Cook said in a statement on the ECB's website.

"Although it is a sad day, I can do so with a big smile on my face knowing I have given everything and there is nothing left in the tank. I have achieved more than I could have ever imagined and feel very privileged to have played for such a long time alongside some of the greats of the English game.

"The thought of not sharing the dressing room again with some of my team-mates was the hardest part of my decision, but I know the timing is right.

"I have loved cricket my whole life from playing in the garden as a child and will never underestimate how special it is to pull on an England shirt. 

"So, I know it is the right time to give the next generation of young cricketers their turn to entertain us and feel the immense pride that comes with representing your country."

Cook has scored five double centuries, 32 tons and 56 half-centuries in Test cricket and has been part of four Ashes winning teams.

He was the star of the 2010-11 series when he scored 766 runs at an average of over 127 as England won an Ashes series Down Under for the first time in 24 years.

Cook took the captaincy on a permanent basis from Andrew Strauss in August 2012 and England would win two more Ashes series with the Essex batsman as skipper.

He also led his country in one-day internationals and made 3,204 runs in 92 appearances, while he has featured in four Twenty20s for England too.

Five-day cricket has been his sole focus internationally since 2014, though, and he will hope to bow it in style in his 161st Test having managed just 109 runs across seven innings in the India series.

It leaves England with another top-order slot to fill in their batting line-up for the upcoming tour of Sri Lanka, with Cook having been the constant presence alongside a plethora of different opening partners in recent years.