Bosses from the UK industry gathered for a round-table debate hosted by City Cruises and chaired by travel industry stalwart Fiona Jeffrey in London this month.
While a number of topics were up for conversation, the need to maintain a single free airspace was the dominant one.
Alistair Pritchard, lead partner at Deloitte, said: “For us, a single European sky and similar legislation around maritime and rail around Europe is the number one priority.
“The negotiations around how we feed into that are critical because we’ll have to start negotiating bilateral agreements to move aircrafts across Europe and indeed to the US.”