The postal deadline to vote in next month’s European Union Referendum closes on Monday, Deputy Governor Ginny Ferson has advised.

Scheduled to take place on June 23, the poll popularly known as “Brexit” will decide whether or not the United Kingdom stays in the European Union.

“British, Northern Irish and Commonwealth citizens who have registered to vote in the UK in the past 15 years are still eligible to vote, even if they are now living elsewhere,” Ms Ferson said.

“This may well apply to a number of Bermudians in addition to UK and other expats.”

Should the UK leave the EU, Ms Ferson said there would be no knock-on effects specific to Bermuda.

“But a UK exit may mean that freedom of movement within the EU is likely to be up for renegotiation for all British passport holders,” she added.

On Tuesday, the Electoral Commission’s communications director Alex Robertson published a blog post encouraging the UK’s 5.5 million citizens living abroad to register online to vote at www.gov.uk/register-to-vote.

“What used to be a real hassle can now be done online in five minutes with just your National Insurance number and passport to hand,” he said.

Online voters must register by June 7 to vote in the referendum, with proxy voting another available option.

Ms Ferson added: “I believe that Brits all over the world are watching this closely, as are many non-Brits, and I would certainly encourage all those who are eligible to vote to consider doing so.”