Expressing regret, Cameron says Britain will not turn back on EU

British Prime Minister David Cameron (L) gestures next to French President Francois Hollande at the EU summit in Brussels, Belgium, June 28, 2016. [Photo/Agencies]

Brexit talks to be triggered by next British PM

Cameron also announced he would not trigger Britain's exit talks with the European Union (EU) but leave the tricky issue to his successor.

Britain will discuss with the EU and examine all the ways following the historic referendum but the incumbent British government will not initiative Britain's exit procedure, he told a press conference after an EU summit.

The negotiations between London and Brussels on how to deal with the vote and the decision to trigger a British exit may only be made by "next cabinet" and "next prime minister," he said.

Cameron said he explained the situation in Britain to leaders from 27 European countries at the summit. He said their discussion was "constructive, calm and understanding."