EasyJet passengers will not benefit from relaxation of the one cabin-bag rule at many UK airports from Monday.

The airline will maintain a ban on second cabin bags, arguing the partial relaxation risks confusing passengers.

The restriction will be lifted at Heathrow, Stansted, Manchester, Birmingham and many other airports on January 7. But it will remain in force at Luton, Belfast, Bristol, East Midlands and Liverpool – all of them EasyJet bases.

EasyJet chief executive Andy Harrison said: “There is massive scope for customer confusion where UK airports are adopting different policies.”

Harrison also complained that some BAA-operated airports, such as Gatwick, will increase charges to cope with the relaxation and these would have to be passed on in fares if a second bag is allowed.

BMI will also maintain the one cabin-bag restriction on economy passengers, although those in business class will be allowed two bags.