The Traveling Taylors

You’ve seen the Union Jack everywhere in the UK, but did you know London has its own flag? On our latest trip, we spotted a bold red cross flying above a City of London building and had to know more. It turns out, the official London flag has a long history and a unique identity all its own. Here’s what it means, what it looks like, and how to spot it during your visit.

What Is the Official London Flag? Here’s the Meaning Behind It

1. Yes, London Has an Official Flag

The flag of London refers specifically to the City of London—the historic square-mile at the heart of the capital, not Greater London as a whole. It has its own governance and heraldry, including this distinct flag.

2. What the London Flag Looks Like

The official flag features a red St. George’s Cross (like England’s flag) on a white background, with a red sword in the upper left corner (hoist canton). The sword represents Saint Paul, the patron saint of the City of London.

3. Why the Sword Matters

The upward-pointing sword symbolizes the martyrdom of Saint Paul, who was beheaded by sword. This detail sets the City of London flag apart from the simple red cross of England’s national flag.

4. It’s Different From the Union Jack

The Union Jack represents the United Kingdom as a whole. The flag of England is just the red St. George’s Cross. The City of London flag includes both that cross and the sword of Saint Paul, making it distinct from both.

5. Where You Might See the Flag

Look for it flying above:

• Guildhall (City of London’s government center)
• The Tower of London (special occasions)
• City of London police stations
• Ceremonial parades or Lord Mayor events

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6. It Represents a Unique Government Area

The City of London isn’t like other boroughs. It has its own mayor (the Lord Mayor of London), police force, and centuries-old autonomy. The flag is a symbol of that independence and history.

7. No, Greater London Doesn’t Have a Single Flag

While the City of London has a flag, Greater London (the modern 32 boroughs + the City) does not have an official flag. So when you see a London flag, it’s almost always referencing the ancient City.

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Why the London Flag Matter

It’s easy to miss, but the City of London flag tells a story of history, identity, and independence that goes back over 1,000 years. If you spot the red sword and cross during your visit, now you’ll know exactly what it means.