Travellers looking for a catch might point to the terms and conditions for ‘Business Plus’ bookings on Ryanair’s website. While services such as a checked-in bag and a ‘premium’ seat are provided at no extra charge, to get them customers have to make sure they tick the right boxes during the airline’s much-criticised booking process. If they forget or fail to fill in the forms correctly, they will miss out but still be charged the ‘Business Plus’ price, Ryanair warned.