A major airline has advice to help passengers 'avoid delays'. British Airways offers advice on its website, where the airline shares the latest guidance and travel updates for customers. The travel firm also answers frequently asked questions (FAQs).

In the baggage FAQ section online, British Airways shares advice for anyone travelling with medication. British Airways said it recommends that passengers carry a copy of their prescription for any medication they are carrying. The advice said: "We recommend you carry a copy of the prescription for your medication to avoid delays at security or customs."

Passengers are advised to carry any essential medications in their hand luggage. British Airways explained: "If you need to take regular medication, it’s important to pack enough essential medication for your personal use on board - and for the first few days of your journey - into your smaller under-seat item of hand baggage. This is in case your hold baggage is delayed for any reason."

British Airways said that this medication shouldn't be packed in any larger cabin bags. "Avoid packing medication in your larger cabin bag as you may be asked to put it into the hold on busy flights.

"Additional medication for personal use at your destination can also be packed in your checked baggage, so long as you are carrying enough for a few days in your hand baggage in case of any eventuality."

There are allowances for passengers who need to carry medicines exceeding 100ml. Gov.uk explains: "You’re allowed to carry the following in your hand luggage: essential medicines of more than 100ml, including liquid dietary foodstuffs and inhalers or medical equipment, if it’s essential for your journey.

"You’ll need to carry proof that the medication is prescribed to you (for example, a letter from your doctor or a copy of your prescription) if it’s both: in liquid form and in a container larger than 100ml. You do not need to show proof if the medication is either: in tablet form or liquid in a container that’s 100ml or smaller."

Gov.uk also shares advice for any passengers travelling with medicine containing a controlled drug. The guidance states: "You must carry medicine containing a controlled drug with you in your hand luggage when entering or leaving the UK. It may be taken away from you at the border if you cannot prove it was prescribed for you."

Passengers with more questions about baggage and liquid rules should check with their airline. Always check the guidance before travel.