Ryanair passengers have been warned to check the dimensions of their 10kg bags as every boarding gate will be conducting luggage checks. The airline has strict baggage policies and customers who break the rules can now expect to pay up to £75. Ryanair's luggage allowances are some of the most restrictive of all the UK's major airlines, as travellers who purchase a standard plane ticket are only allowed to bring a 'small personal bag' with them as standard.

This is defined as a handbag, laptop bag or backpack measuring up to 40 x 20 x 25cm that fits under the seat in front of you, such as this Chelsea Backpack from luxury luggage brand Antler , which currently has £42 off in the sale. Customers can pay to upgrade to Priority Boarding, which allows them to board the plane early and also entitles them to an extra 10kg bag, measuring up to 55 x 40 x 20cm - the exact size of this Clifton Cabin Bag with £68 off in Antler's summer sale. Read more: UK tourists visiting Turkey 'in early August' warned as 'worst still to come' Passengers who haven't paid for Priority who bring a bag that's larger than Ryanair's 'small personal bag' limit to the boarding gate can be charged between £46 and £60.

The airline has placed bag sizers at all of its boarding gates and customers can be asked to place their bag inside the crate to prove that it fits within the size limits. If it doesn't, you'll have to pay a gate bag fee. Ryanair's updated rules read: "You must adhere strictly to the baggage.