Holidaymakers are bracing for long queues at borders as additional checks are carried out and international travel increases after quarantine measures are eased. Transport Secretary Grant Shapps warned on Friday that people should “expect more disruption than usual” due to coronavirus-related inspections. Travel firms reported accelerated bookings after the government announced that double-jabbed Britons and under-18s will be exempt from quarantine measures when returning to England from amber list countries from July 19. Shapps said ministers are “actively working” on accepting vaccination certificates from other countries after it emerged only passengers with NHS-issued jabs would be exempt. He added that most of the queuing will be before departure back to England, with airlines checking passenger locator forms, and whether travellers have taken a pre-departure test and booked a post-arrival test. “So the place to expect queues is the airport you are coming from. Once you get back to the UK …