"Congratulations David Cameron. As you rightly pointed out - its "Phir Ek Baar, Cameron Sarkar!" My best wishes", Modi tweeted.
His message came as Cameron looked set for a second term as Prime Minister with his Conservative Party likely to get a majority in the UK's hotly-contested polls.
His Modi-style "Phir ek baar Cameron sarkar" slogan seems to have resonated with most of the electorate as the Tories were projected to win 329 in the final tally, three more than the 326 required for a majority in the 650-member House of Commons.