Heathrow Airport operates a 'two-bag policy' at security checkpoints to reduce delays, meaning passengers can only bring two pieces of hand baggage through the control area. Handbags and laptop bags count as a piece of hand baggage, according to advice on the airport's website.
Any item larger than 56cm x 45cm x 25cm (22in x 18in x 10in) must be checked in as hold luggage. This policy aims to minimise the number of items placed in security trays, speeding up the process for all travellers.
Passengers should also note that electronic devices must be placed in a separate tray during screening, and devices must be charged; if they do not switch on, they may not be allowed on the aircraft. Charging points are available throughout the airport.
For liquids, Heathrow's guidance differs from many UK airports: liquids in containers up to two litres can remain in cabin bags and be taken through security in all terminals (T2, T3, T4 and T5). However, refillable metal or double-walled containers must be emptied, but can be refilled once through security.
E-cigarettes must be kept in hand luggage, not in checked baggage. Solid products like deodorant sticks, soap bars, wet wipes, and lip balms are usually considered non-liquids and do not require storage in a plastic bag.



