On Monday 4 April, Mr Chalklen was informed that he couldn’t board the flight he booked if he planned to travel unaccompanied, because the Swiss Air Medical Department argued that he could not use the sanitary facilities independently. The standard flight time for this route, from London to Geneva, is one hour, 40 minutes, and although Mr Chalklen is a frequent and experienced flyer, he was refused access on the grounds of his disability.