While traveling through London airports, passengers now face a mix of liquid restrictions depending on which terminal they use. The long-standing 100ml rule has been partially lifted in several London airports, with Heathrow’s Terminals 2, 3, and 5 now permitting liquids up to 2 litres in cabin bags.
Terminal 4, however, still enforces the 100ml limit during the installation of new CT scanners. This creates significant confusion for travelers connecting between terminals. These advanced scanners create detailed 3D images of luggage contents, eliminating the need to remove liquids or electronics during security checks.
At fully upgraded airports like Stansted, passengers can keep all items in their bags, greatly reducing queue times. Edinburgh and Birmingham airports have completely abandoned the 100ml restriction, with no limit on how many 2-litre containers travelers can bring.
Despite these changes, restrictions remain in partially upgraded airports. Containers larger than 100ml are still prohibited in non-upgraded security lanes, even if they’re only partially full. This rule applies to semi-liquids like jam or honey as well.
The traditional transparent, resealable plastic bag (approximately 20cm x 20cm) is still required in these lanes. Semi-liquid foods such as soups and jams count as liquids and must follow the same restrictions. Certain exemptions exist for travelers with special needs. Medical liquids and items required for special dietary purposes are exempt from volume restrictions, though passengers must declare them separately.
Duty-free liquids purchased after security are permitted onboard for most destinations if they remain in security-sealed bags with receipts visible. Travelers should note that explosive, flammable, or toxic liquids remain banned in both hand and hold luggage.
Metal or double-walled containers, including vacuum flasks, must be emptied before security but can be refilled afterward. Food items and powders may trigger additional security checks, so placing them in hold luggage can save time.
For the smoothest experience, passengers should check their specific airport’s website before traveling, assume 100ml rules apply unless stated otherwise, and keep essential items like tickets and chargers easily accessible. When returning from international destinations, travelers should be prepared for traditional security procedures as many overseas airports in Spain, France, and other European countries still enforce the 100ml limit and plastic bag requirement.
