4/20 Hyde Park 2025

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Considered the biggest weed festival in the world, 420 Hyde Park is an annual celebration of cannabis, bringing together thousands of people in an open and relaxed environment. Whether you’re a seasoned attendee or curious first-timer, here’s everything you need to know about why you should go, what to expect and the history behind the day.

When Is 4/20 In 2025?

As the name suggests, 4/20 falls on April 20th every year. In 2025, it lands on a Sunday, which makes it perfect for a chilled weekend experience (following a Saturday date in 2024). The event unofficially kicks off around 12pm and goes on until 6 pm, but many people arrive earlier and linger longer. There are no strict timings, so feel free to drop in whenever it suits you.

What Does The Day Celebrate?

4/20 is a worldwide celebration of cannabis culture, but it’s also an opportunity to advocate for the legalisation of cannabis, especially here in the UK, where it remains illegal.

The unofficial International Weed Day is also a great chance to mingle and meet other people with a common interest in marijuana. Considering the docile nature people are in when smoking, it means you don’t tend to see any scenes of danger or violence, therefore the police tend to take a more relaxed approach.

Will I Be Arrested For Smoking Weed?

Marijuana is illegal in the UK and is classified as a Class B drug. In theory, possession of marijuana could result in up to five years in prison, while growing it can carry a maximum penalty of 14 years.

However, during 4/20 at Hyde Park, police are typically more lenient. If you’re caught with a small amount for personal use (usually under an ounce, or 28 grams), you’re more likely to receive a warning or an on-the-spot fine, especially if you’re polite and cooperative. It’s important to remember that it does depend on the individual officer, so while the risk of arrest is low, it’s still there.

Interestingly/annoyingly, marijuana was upgraded from a Class C back in 2009, despite the recommendations from the advisory council, meaning it would carry a more hefty prison sentence. In 2012, there was a home affairs committee consideration of whether to move it back to Class C, but it was tied and the classification remained.

Overall, the police seem incredibly relaxed around this event, as I think they realise they can’t arrest thousands of people for being happy, compare this to a drink based festival and how many more issues they would see.

Do I Need To Sign Up To Attend?

No, this celebration is welcome to everyone and you can simply turn up. There is a Facebook event page, which can help you to see if any of your friends are attending, but it isn’t required for attendance.

What Does 4/20 Mean?

The term nowadays is simply another term for marijuana or hashish, while it has also become a key calendar day in the year where people gather together to smoke weed. It also is associated with the time of day that many people smoke weed, 4:20pm.

But the real reason for the numbers is blended in myths and rumours, it is partly up to you to decide which one you believe the most.

The most plausible and well documented reason is related to a group of California high school kids back in the 1970’s. They would use the phrase 420 as this was the time they got high every day after school. The group called themselves the ‘Waldos’.

Another related rumour based on the same group stated that they would meet each day to search for an abandoned stash of cannabis. As the statue where they would meet was the statue of Louis Pasteur, this would explain the common “4:20 Louis” expression that has often been spoken about when documenting the potential history. Of course, some others said that they would simply meet at the statue and get high there, which is equally plausible.

One rumour which I originally believed, but has been heavily downplayed as there is a lack of evidence to support it, was that police would use those numbers as the penal code if it was a crime related to marijuana. However, this doesn’t seem to be documented in police files, therefore it seems highly unlikely.

A more looser theory was that it was to do with the number of active chemicals found in marijuana, which might have been the belief when it was setup, but we now know there are over 500 and once again there doesn’t appear much evidence behind this claim.

How Do I Get There?

The easiest way to get to Hyde Park is via public transport, with a few nearby tube stations.

The nearest stations you can get a train to are Hyde Park Corner and March Arch, however due to the size of Hyde Park, you could easily get to Hyde Park from Knightsbridge, Victoria, Bond Street, Green Park and Paddington.

If you’d prefer to take the bus, I’d recommend having a look on the TFL website to plan out your journey from your local area.

But one thing I will state, I wouldn’t recommend driving here, the roads are so packed up, you’ll spend most of the day stuck in a car and will struggle to park.

If you’re coming from outside of London, as well as taking an over ground train and then switching to the tube or walking, you could also take a coach to Victoria coach station.

Are you attending this year? Give me a shout beforehand, I’m hoping to head down and really excited to meet others who want to enjoy the big day!

Are You Going to 4/20 Hyde Park in 2025?

If you’re planning on going this year, let me know! I’m excited to meet others who want to enjoy the event and share in the relaxed environment of 4/20. Let’s make this year’s gathering one to remember!

10 COMMENTS

  1. 420! This term comes from the light cycles the plant is subjected to during its growing stage, and so references 4 hours of dark and 20 hours of light across a 24hr period!

  2. Hey! I want to come but it’s just me 🥲 I’m on holiday by myself. Anyone looking for a fun Argentinean friend? 😁🤗

  3. You have an IG or email to get in touch ? I’m traveling down to the park tomorrow from West Midlands but my first time in UK for 420 … I’m staying wit family up here and am horn an raised in nyc so definitely excited to see the uk atmosphere an Hyde park 420 seems like the best way to get to that …!leme kno an take it easy my man .. Mo

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