We all put up with inconveniences to jet around the world – hurried walks across labyrinthine airports, onerous security checks and being crammed with hundreds of others into a small metal tube for several hours.

Few of us, however, will have deliberately dehydrated ourselves before a flight because we know there will be no way to access a toilet on board. Or watched from our seat as every other passenger disembarked, waiting for our assistance to arrive. Or been left immobile in a new city because our wheelchair has been damaged or lost in transit.

For “persons with reduced mobility” (PRMs) with a permanent or temporary physical disability, the whole experience of flying – from passing through the airport and getting on to the aircraft, to travelling in a cramped seat and then getting off on the other side – can be fraught with difficulty. In a recent survey of disabled people commissioned by Which?, almost half of respondents said that a lack of confidence in accessibility services had limited their ability to fly in the past two years.