Changes to Terminal 4 parking from 23 June

From 23 June 2026, the Terminal 4 multi-storey car park (for Terminal and Meet & Greet Parking) has closed as part of a major redevelopment programme to modernise the terminal's forecourts and car park, improving passenger experience.

All passenger parking for Terminal 4 will move to Zone A of the Terminal 4 Park & Ride car park.

Find out more about the changes
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Security & baggage

Know what you can and can't take through security and onto your flight.

Prepare for security

Heathrow has upgraded its security scanners. You can now keep liquids and large electronic items in your cabin bag, so getting through security is quicker and easier.

When you travel through Heathrow, you can:

  • Keep liquids in your cabin bag.
  • Carry liquids in containers of up to 2 litres each.
  • Empty metal and insulated bottles before security. You can refill them after security.
  • Keep laptops, tablets and other large electronic items in your bag. 

Flying from another airport

Not all airports use the same security equipment. If you're flying from another UK or international airport, check the local security rules before you travel. Liquid limits and security checks may be different.
 

Prepare for security as normal
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What not to take

Banned and restricted items

Some items aren't allowed on an aircraft, while others can't be carried in your cabin bag. Check the rules before you travel and leave banned items at home.

Baggage allowances

Your baggage allowance depends on your airline, ticket, destination and cabin class. Check your airline's baggage rules before you travel.

Quick links

  • Lost or delayed bags
    Lost or delayed bags

    Find out what to do if your baggage is lost, delayed or damaged.

    More about lost or delayed bags
  • Left baggage
    Left baggage

    Store your bags safely for a few hours or longer.

    Left luggage
  • Baggage forwarding
    Baggage forwarding

    Send your bags ahead instead of travelling with them.

    Baggage forwarding
  • Baggage wrapping
    Baggage wrapping

    Protect your bags before you travel.

    Baggage wrapping
  • Security FAQs
    Security FAQs

    Find answers to common security questions.

    Security FAQs
  • Security privacy notice
    Security privacy notice

    Learn how we protect your personal data.

    Security privacy notice
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