UK will be better off remaining in a reformed EU, Heathrow Airport 's CEO has announced in a statement.

John Holland-Kaye's words are the latest string of warnings from business leaders urging voters to think of business implications after Prime Minister David Cameron announced the date for a referendum on June 23 to decide whether Britain remains a part of the European Union .

Commenting on the European Union’s impact on trade, aviation and British prosperity, Mr Holland-Kaye said: "Heathrow believes that the UK will be better off remaining in a reformed EU.

"We are the UK’s only hub airport, connecting Britain to over 80 long haul destinations, and handling over a quarter of UK exports – but we recognise that for business to thrive we also need to be part of the single European market."

He added: "Membership of the EU has made air travel affordable and convenient, with regular flights to the continent from all parts of Britain - fuelling jobs, exports and economic growth.

"A vote to remain offers the best of both worlds – it secures our place as a powerhouse in the global economy, while remaining in the world’s largest free trade zone.”

A number of businesses wrote to Cameron in support of remaining in the EU, according a letter published in The Times.

Bosses at Marks and Spencers, BT and Vodafone were amongst the 36 FTSE 100 companies who said Brexit would threaten commercial interests.

The news comes after London Mayor and MP for Uxbridge and South Ruislip Boris Johnson announced he will not be supporting Cameron and will be voting for Britain to leave the EU .

Meanwhile, West London MPs are divided in their views to vote In our Out , with some claiming the benefits for staying in are "huge" and others firmly of the belief that remaining in could see the situation get out of "proper democratic control."