uk airport liquid rules 2026: the 100ml vs 2l map

2. What Actually Changed: In-Bag Screening & DfT Approvals

For nearly two decades, aviation security across the United Kingdom operated under a single, unbending baseline: the 2006 carry-on liquids restriction introduced after transatlantic liquid explosive plots were thwarted. Under that legacy framework, every liquid, aerosol, and gel container carried into the passenger cabin was capped at 100 ml (3.4 oz), and all containers had to fit inside a single, transparent, resealable 1-litre plastic bag measuring approximately 20 × 20 cm.

In 2026, that uniformity has completely fractured. The UK's 2006 100ml carry-on liquids rule is being replaced airport-by-airport following deployment of next-generation CT (NGSC) scanners; each airport requires individual Department for Transport (DfT) approval before it may lift the limit. Travelers now navigate two distinct structural transformations that are frequently conflated:

Understanding how the UK reached this state requires examining the regulatory track over the past twenty-four months. When next-generation computed tomography (CT) scanners were first installed across European and British airports in early 2024, several hubs prematurely relaxed container limits. However, in September 2024, the European Commission reversed early liquid relaxations across the EU over equipment-certification issues, temporarily capping all CT lanes at 100 ml while detection software underwent rigorous re-evaluation.

The regulatory logjam broke in mid-2025. After the European Civil Aviation Conference (ECAC) recertified the Smiths Detection HI-SCAN 6040 CTiX CT scanner in July 2025, the European Commission adopted Regulation (EU) 2025/920, allowing airports equipped with approved and recertified 3D scanners to lift liquid allowances up to 2 litres. In the UK, new carry-on liquids regulations officially took effect on 17 July 2025 (UK liquids regulations in force 17 July 2025), establishing the statutory mechanism under which the Department for Transport (DfT) conducts terminal-by-terminal operational audits and grants individual authorizations to raise container thresholds.

3. The UK Airport Liquid Map (2L vs. 100ml Table)

Because DfT approvals are granted on a facility-by-facility basis rather than nationwide, the United Kingdom is divided into two operational regimes. The machine-readable table below presents the verified status of all major commercial UK airports as of August 2026. For complete scanner deployment schedules, terminal-by-terminal lane breakdowns, and photographic film sensitivity warnings, consult our comprehensive CT scanner security guide.

4. The 2-Litre Airports (Heathrow, Gatwick & Hubs)

The flagship milestone in the UK's airport screening transformation took place at London Heathrow. Following a reported ~GBP 1 billion NGSC upgrade program across all passenger terminals (Terminal 2, Terminal 3, Terminal 4, and Terminal 5), Heathrow officially lifted the 100ml restriction at the end of January 2026. The landmark policy change was formally announced on 23 January 2026 (announced 23 January 2026), establishing Heathrow as "the largest airport in the world to fully roll out next-generation CT security scanners" according to Heathrow's own official operational statement.

Passengers departing Heathrow across any of its four active terminals are no longer bound by the 100 ml container ceiling. Travelers can carry full-sized shampoo bottles, perfumes, sunscreen lotions, and beverages in containers up to 2 litres (2L). Furthermore, there is no regulatory limit on the number of 2 L containers a passenger can carry, provided the items fit comfortably inside their airline-approved cabin baggage and comply with weight restrictions.

Seven additional UK commercial airports have secured DfT certification and currently operate the 2-litre liquid standard:

• London Gatwick (LGW): Both the North Terminal and South Terminal security checkpoints have completed their scanner installations, allowing passengers to keep 2-litre liquids and electronics inside cabin luggage.
• Edinburgh Airport (EDI): Scotland's busiest airport has operational 3D CT lanes across its entire departure hall, permitting 2-litre containers and eliminating bag unpacking.
• Birmingham Airport (BHX): Following construction of its new next-generation security screening area, Birmingham permits containers up to 2 litres per container.
• Bristol Airport (BRS): Serving the South West of England, Bristol's central search area has fully transitioned to 2-litre allowances.
• Belfast City (BHD) & Belfast International (BFS): Both Northern Irish hubs allow up to 2 litres of liquid per container with in-bag screening.
• Bournemouth Airport (BOH): Completed its terminal-wide scanner transition early, offering full 2-litre container allowances.

At all eight 2 L airports, liquids stay in your hand luggage without needing a transparent plastic bag. However, security equipment limitations introduce a critical physical exception for insulated beverage containers, detailed in the traps section below.

5. The 100ml Airports: Manchester, Stansted & Regionals

Despite widespread media headlines suggesting the 100 ml rule has been abolished across Britain, approximately 18 UK commercial airports continue to strictly enforce the 100 ml per-container limit as of August 2026. The persistence of the legacy rule at major hubs stems directly from the Department for Transport's rigorous safety certification process.

The most prominent example is Manchester Airport (MAN). Manchester has already completed extensive hardware installations of next-generation CT scanners, including lanes across its newly expanded Terminal 2 security hall. However, DfT approval for the 2 L lift has not been granted. The physical scanners are fully capable of high-resolution 3D volumetric analysis, but until the Department for Transport signs off on the airport's operational risk protocols, security screeners must legally reject any liquid container larger than 100 ml.

Similarly, at London Stansted (STN), CT installation is progressing in phases through 2026, meaning standard lanes continue to mandate 100 ml containers. At London Luton (LTN) and London City (LCY), current official guidance explicitly states that all liquid containers must be 100 ml or less. (Claims circulating on unverified travel forums that London City allows 2-litre liquids are inaccurate and must be rejected).

At all 100 ml airports, the standard rules apply rigorously:

1. The Container Rule: Every liquid, cream, gel, or aerosol container must hold 100 ml or less. A 200 ml bottle containing only 50 ml of liquid is strictly refused and will be confiscated.
2. The 1L Bag Requirement: While modern scanners at some 100 ml airports allow liquids to remain in your carry-on bag during scanning, the single 1 L clear resealable plastic bag remains the standard packing requirement, and security staff at certain checkpoints still require passengers to present items in this format.
3. Regional Consistency: Regional airports including Newcastle, Liverpool John Lennon, Glasgow, East Midlands, Aberdeen, Cardiff, Southampton, Leeds Bradford, Norwich, Teesside, and Newquay all enforce 100 ml or less per container.

6. The Four Liquid Traps: Flasks, Returns, Caps & Exemptions

The patchwork transition creates specific operational friction points where knowledgeable travelers frequently lose expensive items at security checkpoints. Four traps require careful packing discipline:

7. Beyond the UK: The European Union Patchwork

International travelers must recognize that European Union aviation screening remains equally fragmented following the September 2024 ECAC equipment review. The overarching EU-wide standard remains 100 ml per container packed in a 1 L clear resealable plastic bag. The 2-litre relaxation applies strictly at certified individual airports and, in many countries, only at specific checkpoint lanes:

8. How to Pack in 2026: The Practical Rule

Given the split between 8 UK hubs and ~18 regional airports, practical packing strategy in 2026 depends on your itinerary type:

• The 100ml Default: Unless you are flying point-to-point between two confirmed 2-litre airports (such as London Heathrow to Dublin or Edinburgh to Rome Fiumicino), packing to the 100 ml standard in a clear 1-litre bag remains the safest approach. For official definitions of what qualifies as an acceptable plastic container, see our analysis at Do Liquids Need a Clear Bag?.
• The Flask Strategy: Carry an empty reusable water bottle or vacuum flask through the checkpoint, and fill it airside after clearing security.
• Duty-Free Connecting Flights: Liquids purchased airside in duty-free stores must remain sealed inside a tamper-evident bag (STEB) alongside the receipt. If you have an international connection requiring security re-screening outside the EU/UK, duty-free liquids may still be subject to confiscation.