Britain’s decision to reimpose coronavirus quarantines on France and the Netherlands has sparked dismay among airlines and airports struggling to overcome the industry’s worst crisis. European airline shares tumbled on deepening concerns that the weaker than hoped travel recovery could yet stall or be reversed by new outbreaks and restrictions. Shares in EasyJet, which is the most exposed carrier with UK-France routes accounting for 14% of capacity, dropped by 6.8%. The budget airline made no immediate schedule changes but said customers could cancel for free exchanges or vouchers. With long-haul traffic flat-lining, Citi analyst Mark Manduca said, the new restrictions hit point-to-point leisure travel that had been viewed with more optimism and dented already fragile confidence in the broader travel sector. “It’s not so much about this summer or even this year, which is a write-off,” Manduca said. “It’s more about direction of travel, a step in the wrong direction for a market that’s trying to recover.” British holidaymakers flocked home early after their government removed France, the Netherlands, Malta, Monaco and two Caribbean territories from a list of unrestricted destinations, with effect from 0300 GMT on Saturday.