This is the single most common mistake American travelers make when packing for a Europe trip that includes the UK: they buy a "European plug adapter" and assume it works everywhere in Europe, including London. It does not.
The UK's Type G outlet is a completely different system from the Type C/E/F outlets used across continental Europe. If your trip includes both London and Paris โ or Edinburgh and Rome โ you need adapters for both systems. This guide explains exactly what is different, why, and how to pack correctly. For a broader look at all the plug types across Europe, see our Europe multi-country adapter guide.
Type G vs Type C/F: Side-by-Side
| Feature | UK โ Type G | Continental Europe โ Type C/E/F |
|---|---|---|
| Pin shape | 3 rectangular pins (flat blades) | 2 round pins (4.0โ4.8mm) |
| Pin layout | Triangle pattern: 1 top, 2 bottom | Two pins side by side |
| Grounding | Yes โ top pin is earth | Type C: No / Type E: socket pin / Type F: side clips |
| Fuse | Built into the plug (3A, 5A, or 13A) | No fuse in plug |
| Safety shutters | Yes โ earth pin opens shutters | Some Type E/F have child safety shutters |
| Voltage | 230V ~ 50Hz | 230V ~ 50Hz |
| Max current | 13A (3,000W) | 16A (3,680W) for Type F |
| Countries | UK, Ireland, Malta, Cyprus, Gibraltar | France, Germany, Spain, Italy, Netherlands, and 30+ others |
| Compatible with each other? | No | No |
Figure 1: European countries grouped by plug system. Type G (UK system) is used by only 5 countries; Type C/E/F covers 35+.
The Three Mistakes U.S. Travelers Make
Mistake 1: Buying a "European adapter" and assuming it works in the UK
When you search "European travel adapter" on Amazon, most results show a Type C or Type C/F adapter โ the two-round-pin continental European type. These do not fit UK Type G outlets. If your trip starts in London, you will arrive at your hotel with a useless adapter.
Mistake 2: Buying a UK adapter and assuming it works on the continent
The reverse is equally common. A US-to-UK (Type G) adapter gives you three rectangular pins that do not fit into any outlet in France, Germany, Spain, Italy, or any other continental European country.
Mistake 3: Thinking the UK and Europe use the same voltage system
Technically they do โ both are 230V/50Hz. But many travelers confuse "same voltage" with "same plug." The voltage is the same; the physical outlet shape is completely different. You do not need a voltage converter for either destination โ but you do need the correct plug adapter for each.
Which Countries Use Which System?
Type G (UK system)
- United Kingdom โ England, Scotland, Wales, Northern Ireland
- Ireland (Republic of Ireland)
- Malta
- Cyprus
- Gibraltar
Type C/E/F (continental European system)
- Type E: France, Belgium, Poland, Czech Republic, Slovakia
- Type F: Germany, Austria, Netherlands, Spain, Portugal, Sweden, Norway, Finland, Greece, Hungary, Turkey
- Type J: Switzerland, Liechtenstein (accepts Type C)
- Type K: Denmark (accepts Type C)
- Type L: Italy (accepts Type C)
Packing Checklist: UK + Continental Europe Trip
If your itinerary includes both the UK and continental Europe (a very common combination โ London + Paris, Edinburgh + Amsterdam, etc.), here is exactly what to pack:
| Item | Works in UK? | Works in Continental Europe? |
|---|---|---|
| US-to-Type G adapter only | Yes | No |
| US-to-Type C/F adapter only | No | Yes |
| Both adapters (2 separate pieces) | Yes | Yes |
| DOACE Universal Adapter (single device) | Yes (UK prong) | Yes (EU prong) |
The simplest solution is a single universal adapter with interchangeable prongs. The DOACE 70W GaN Travel Adapter includes UK, EU, AU, and US prongs โ switch between them as you cross borders.
- One adapter for the entire trip โ UK, France, Germany, Italy, Switzerland, all covered
- 70W USB-C PD โ fast-charge your phone and laptop without carrying separate chargers
- Built-in USB-C cable โ one less cable to pack
- Pass-through AC outlet โ plug in a CPAP or other device simultaneously
Why Does the UK Use a Different Plug?
The UK's Type G system was designed in 1947 by the British Standards Institution after World War II. It was specifically engineered for safety:
- Built-in fuse: Every UK plug contains a replaceable fuse (typically 3A or 13A). This protects the cable between the outlet and the device. Continental European plugs have no fuse โ the circuit breaker in the wall panel handles protection.
- Safety shutters: UK outlets have spring-loaded shutters that only open when the earth pin is inserted first. This prevents children from inserting objects into live contacts.
- Ring circuit design: The UK uses a ring circuit wiring pattern (unlike the radial circuits in continental Europe), which requires fused plugs to work safely.
This is why the UK never adopted the continental European standard โ their system is fundamentally different at the wiring level, not just the plug shape.
UK Bathroom Outlets: The Shaver Exception
UK bathrooms often have a special two-pin "shaver outlet" that looks similar to a European Type C outlet. These are designed for low-wattage devices (shavers, electric toothbrushes) and are limited to about 200W. They accept both UK shaver plugs and some European two-pin plugs.
Do not rely on these for anything beyond a toothbrush or shaver โ they cannot power a phone charger reliably and definitely cannot handle a laptop charger. Use the regular Type G outlets in the bedroom with your adapter. For more on European hotel outlet locations, see our hotel outlet guide.
Frequently Asked Questions
I am only going to London. Do I still need a universal adapter?
If you are only visiting the UK (and no other countries), a simple US-to-Type G adapter is sufficient. But a universal adapter costs only slightly more and works if you extend your trip or travel again later. The DOACE GaN adapter also provides USB-C fast charging, which a basic Type G adapter does not.
Do I need a voltage converter for the UK?
Only if you are bringing a 120V-only device (like a US hair dryer). The UK runs on 230V โ the same as continental Europe. All modern electronics (phones, laptops, cameras) accept 100โ240V and only need a plug adapter. For 120V devices, see our voltage explainer.
Does Ireland use the UK plug or the European plug?
Ireland uses Type G โ the same as the UK. If you are traveling from Dublin to Paris, you are crossing plug systems and need both adapter types. A universal adapter handles this automatically.
I bought a cheap "European adapter" on Amazon. Will it work in London?
Almost certainly not. Most "European adapters" sold on Amazon are Type C or Type C/F adapters designed for continental Europe. They have two round pins that do not fit the UK's Type G rectangular sockets. Check the product listing carefully โ if it does not specifically mention "UK" or "Type G," it will not work in London.
The Eurostar train goes from London to Paris. Do I need to switch adapters on the train?
Eurostar trains typically have UK-style Type G outlets in the UK section and European Type C/F outlets in the French section. Some newer trains have USB outlets throughout. If you carry a universal adapter, you are covered regardless. For a comprehensive look at which adapters you need across a multi-country European trip, see our multi-country adapter guide.
