SINGAPORE - Prime Minister Lee Hsien Loong has written to his British counterpart David Cameron to congratulate the latter on his victory in the May 7 election, the Ministry of Foreign Affairs said on Friday.

"On behalf of the Government and people of Singapore, please accept my warmest congratulations on your re-election as the Prime Minister of the United Kingdom. It was a hard fight but the British people have placed their trust in your leadership," PM Lee said in his letter to Mr Cameron, according to MFA.

"Under your stewardship, the UK took difficult decisions and emerged from the financial crisis as the fastest growing economy in the G7.

"The clear mandate you have received enables you to bring your government's long-term economic plan to fruition, re-unite the country and fulfil the UK's global responsibilities," said PM Lee.

He added: "Singapore and the UK are longstanding partners. This was highlighted during the State Visit by President Tony Tan Keng Yam to the UK last year.

"Our partnership is underpinned by shared history and common interests in business, defence, education and scientific research. It is also founded upon strong people-to-people links and cultural ties.

"I look forward to continue working with you to take our partnership forward. I wish you continued success and hope that you will visit Singapore again."