Volodymyr Zelensky / REUTERS

British Foreign Secretary Jeremy Hunt has congratulated Volodymyr Zelensky on his presidential election success in Ukraine.

"Congratulations to Volodymyr Zelenskiy & @zeteam_official on your Presidential election success. You will now truly be the Servant of the People," he said on Twitter on April 21.

Read alsoZelensky leads with 72.7%, followed by Poroshenko with 27.3% – TSN exit poll

"We look forward to working together as the UK continues to support Ukraine, her chosen Euro-Atlantic path, reform process & security," he said.

Zelensky, who was nominated by the Servant of the People Party for running for president, is in the lead of the April 21 runoff vote with about 73%, according to several exit polls, while Poroshenko has about 24.6% of the vote.