Modi calls up Cameron to congratulate him on poll win
"I spoke to PM David Cameron and congratulated him on his victory and conveyed my good wishes to him and his entire team," Modi tweeted.
He said he told Cameron that "such an impressive win while being the incumbent PM makes his victory even more special".
Cameron got re-elected last week.
"We both look forward to working together to further enhance co-operation between India and UK on a wide range of issues," Modi added.