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Short answer

Both LGW and LHR allows liquids up to 2 L.

Rules differ at each airport and at the destination border — read the breakdown below.

Outbound airport security

London Gatwick (LGW) allows liquids up to 2 L.

Outbound
Up to 2L
LGWLondon Gatwick
London · United Kingdom
Official source monitoredairport
Max container
2L
Clear bag
Not required
Remove from bag
Not required
Confidence
high

New CT scanners installed. Liquids up to 2L may be carried; check before flying as rules can revert.

Gatwick AirportLast verified 2025-05-20
Return / onward airport security

London Heathrow (LHR) allows liquids up to 2 L.

Return / onward
Up to 2L
LHRLondon Heathrow
London · United Kingdom
Official source monitoredairport
Max container
2L
Clear bag
Not required
Remove from bag
Not required
Confidence
high

CT scanners rolled out across all terminals — liquids up to 2 L now permitted in cabin. Rules can revert; confirm before flying.

Heathrow AirportLast verified 2025-05-20
London allows up to 2 L

London has upgraded scanners — liquids up to 2 L are currently permitted in cabin. Rules can revert; confirm before flying back.

Safest packing recommendation
Up to 2 L both ways

Both airports allow larger containers — but rules can change, so confirm before flying.

Exemptions worth knowing
  • Duty-free liquids in sealed STEB bags with the receipt.
  • Essential medicines — declare at security.
  • Baby food and baby milk for travelling infants.
  • Special dietary needs may be considered case-by-case.
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LiquidLimits.com is a travel planning tool, not an official airport or government source. Rules can change between trips and between terminals. Always check the official airport or aviation security guidance before you travel, and when in doubt pack to the stricter 100ml cabin-bag rule.