Modi also praised outgoing British Prime Minister and Conservative Party leader Rishi Sunak for his admirable leadership of the United Kingdom and his active contribution to deepen the ties between India and the UK during his term in office.

"Best wishes to you and your family for the future," he said.

Starmer is set to become Britain's next prime minister after his Labour Party hurled towards a landslide majority on Friday in the parliamentary elections and dealt a bruising defeat for incumbent premier Rishi Sunak's Conservative Party.

Congratulating him, Modi said, "Heartiest congratulations and best wishes to Keir Starmer on the remarkable victory in the UK general elections. I look forward to our positive and constructive collaboration to further strengthen the India-UK Comprehensive Strategic Partnership in all areas, fostering mutual growth and prosperity."