The UK government and EU have been urged by Britain’s biggest airports to target October next year as a deadline for an interim Brexit aviation arrangement.
The call came in a confidential report submitted to Westminster by Gatwick, Heathrow, London City, Manchester and Stansted airports.
The report, written by consultancy WPI Economics, is understood to have been sent to ministers in recent weeks, according to Sky News.
The document’s most pessimistic scenario forecasts that there could be a 41% fall in passenger demand across Britain’s biggest airports between March 2018 and March 2019 – equating to 8.1 million bookings, or 16.2 million journeys.
It also highlights the risk of a 20.6% decline in aircraft movements – or 297,000 flights.
While WPI does not attempt to quantify the potential revenue impact of such falls, a source at one of the operators said it was likely to be hundreds of millions of pounds across the five airports.
That would translate into much bigger sums in the regional economies surrounding the airports.
The report, titled ‘Brexit and the aviation industry: the opportunity for certainty’, is thought to be the first time that the owners of Britain’s five largest airports – usually bitter rivals – have joined forces to warn of the risks of uncertainty about post-Brexit arrangements.
“With airlines, passengers and airports having to plan months if not years in advance, this has potentially detrimental consequences for UK competitiveness, trade, growth and living standards, which all become more significant the longer that UK and EU negotiators fail to deliver a new trading relationship or transitional deal,” Sky News reported the WPI study as saying.
“This is an important point.
“Although an 11th hour deal may prevent planes from being grounded, damage to the aviation industry and the wider economy would have already been done.”
WPI stresses that an early agreement with the EU is necessary because the closer the industry gets to the end of the Article 50 withdrawal process without a deal, “the greater the negative economic consequences will be”.
“Any slowdown in aviation traffic will undoubtedly have detrimental consequences for UK competitiveness, trade, employment, growth and living standards and airport infrastructure and foreign direct investment,” said one airport industry source who has seen the report.
The airports’ collective alarm bell follows a string of similar warnings by airlines in the 14 months since the EU referendum.
Ryanair chief executive Michael O’Leary last month met transport secretary Chris Grayling to reinforce an earlier statement that airlines would be “cancelling people’s holidays” in the summer of 2019 without a new UK-EU aviation deal.
A source close to Grayling said preliminary informal talks with his EU counterparts had been “positive”.
Grayling has also met with US officials and airlines to discuss the potential renegotiation of aviation deals with ‘third countries’ that will be affected by Brexit.
A government spokesman said: “Aviation is absolutely crucial to the UK’s economy and we are committed to getting the right deal for Britain.
“Our aviation industry is the largest in Europe, and both we and the EU benefit from the connectivity it provides.
“That’s why we are pursuing liberal access to European aviation
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