Wellington: Kane Williamson, New Zealand’s most prolific run-scorer and widely considered the nation's greatest-ever batsman, announced his immediate retirement from international cricket on Friday.

The 35-year-old former captain confirmed his departure through an official statement issued in the midst of New Zealand’s ongoing Test tour of England, where the visiting squad currently trails 1-0 following a defeat in the opening match. Williamson will take no further part in the competitive series, concluding his international career with his final appearance at Lord's.

"I've thought about it for a while, but over the last few days it's become clear now is the right time," Williamson said in a statement released by New Zealand Cricket. "I've always felt a strong drive and hunger for international cricket, and I take pride in knowing I've given it my all in every match I've played for New Zealand. Continuing with anything less wouldn't be right, and I feel fortunate to step away on my own terms.

"I leave feeling optimistic about where this group is heading. There's a huge amount of talent, and a real desire to do something special with this New Zealand team. It's a team I love, and I feel incredibly fortunate to have been part of it for so long. It will continue to be dear to my heart."

New Zealand Head Coach Rob Walter praised Williamson as a "special player and person" while honouring the former captain's choice to conclude his playing career.

"Kane's always put the team first, and although we're disappointed to see him go, we're happy to know he's content and at peace with his decision," Walter stated. "An incredible player, awesome teammate, a wonderful leader and a fantastic ambassador for our sport."