England captain Wayne Rooney refused to reveal on Thursday which way he was voting in Britain's European Union referendum -- or even whether he had voted.

"The option (to vote) has been there for the players," Rooney told a press conference at England's Euro 2016 media centre in Chantilly, north of Paris.

"I don't know which ones have and which ones haven't."

Asked if he had voted, the Manchester United striker replied: "I'd like to keep it private. Whatever happens will happen."

The Football Association made provisions for England's 23 players to vote via post if they wished.

After a divisive campaign, million of Britons voted on Thursday to decide whether their country should remain in the EU.

Euro 2016 has been notable for the success of the four British Isles representatives, with England, Wales, Northern Ireland and the Republic of Ireland all reaching the knockout phase.

But while their exploits have captivated supporters in Britain, Rooney said that he had not been rooting for England's neighbours.

In response to a question about whether he had been cheering them on, he replied: "Not really.

"For us we are happy England are through, and Wales, Northern Ireland, Republic of Ireland are competitors for us. I'm not bothered if they're through or not, to be honest."

England play Iceland in the last 16 in Nice on Monday.