April 20th — affectionately known as 420 — has become a global holiday for cannabis lovers. Despite the plant's legal grey area in the UK, 420 UK celebrations have taken root in cities from London to Brighton, uniting thousands in peaceful protest, community spirit, and pure, unfiltered appreciation for all things weed 420.

In 2025, 420 falls on a Sunday — giving cannabis enthusiasts an entire weekend to soak up the vibe, connect with like-minded people, and advocate for reform. While the UK hasn't yet caught up with the likes of Canada or Germany on full legalisation, 420 continues to gain traction as a cultural moment — blending protest with picnic and activism with artistry.

But here's the catch: while the energy of the day is electric, cannabis is still a Class B drug in the UK. Getting caught with it could lead to a fine or worse. That's why more and more people are turning to CBD flower — a legal, non-psychoactive alternative that still looks, smells, and smokes just like traditional weed.

420 Tip: If you're looking to celebrate responsibly, consider trying CBD flower for those that want something legal and reputable. It's the smart way to join in without the risk.

Whether you're in it for the chill vibes, the protest, or just the excuse to unwind with friends — 420 in the UK is a day that continues to grow in meaning and magnitude. And in 2025, it might just be bigger than ever.

What is 420?

You've heard the phrase tossed around — "Happy 420!", "It's 4:20 somewhere!" — but what is 420, really?

The origin of 420 is more grassroots than most realise. It dates back to the early 1970s in San Rafael, California, where a group of high school students known as The Waldos would meet at 4:20 pm by a statue of Louis Pasteur to search for a rumoured abandoned cannabis crop. The phrase "420" became their code for anything related to weed, and thanks to the Grateful Dead and their fanbase, the term quickly spread across the US — and eventually the globe.

Today, April 20th, has become an unofficial international holiday for cannabis culture. From massive gatherings in Hyde Park to low-key sessions with friends, weed 420 celebrations are about more than lighting up — they're about solidarity, reform, and pushing back against outdated laws.

Where to Celebrate 420 in the UK

With cannabis reform gaining traction around the world, a new UK government in place, and a growing population of medical patients, 2025's 420 UK celebrations are shaping up to be some of the most meaningful yet. Falling on a (hopefully) sunny Sunday this year, it's a rare opportunity to spend a long weekend immersed in the culture — whether you're there for the protest, the party, or peace.

Here's a round-up of the major weed 420 gatherings across the country. If you know of a meetup we've missed, let us know — we'll add it.

420 Hyde Park, London

Without question, the crown jewel of the UK's 420 celebrations takes place at Hyde Park. This historic event has been running in one form or another since 1968 and continues to attract thousands of attendees each year.

According to The Royal Parks, extra police presence will be in place, and certain facilities will be closed, including the shop and boating on the Serpentine. But that doesn't stop the flow. Expect large clouds of smoke, speeches, music, impromptu sound systems, and a spontaneous countdown to 4:20 pm, when the entire crowd raises their joint, pipe or vape for a synchronised toke.

If you plan to attend, get there early — space fills fast, and you'll want a good patch of grass to spread out your supplies. To avoid rolling in the wind, consider smoking pipes for easy public use, and bring along a silicon rolling bowl to prep your flower while out at the park.

• When: 11:00 am – 5:00 pm
• Where: Hyde Park, London, W2 2UH

Brighton 420 Official

Brighton has long been a haven for progressive cannabis culture — it was even home to the UK's first cannabis-infused restaurant. This year, the city's activists are hosting a peaceful celebration in East Brighton Park, offering a more laid-back alternative to London's massive crowds.

Expect music, blankets, sunshine, and the smell of weed. Just remember to bring bin bags and leave no trace behind.

• When: 2:00 pm – 6:00 pm
• Where: East Brighton Park, BN2 5TS

420 at Castle Park, Bristol

Bristol's 420 movement has been steadily growing and has developed a reputation as the UK's most vibrant cannabis gathering outside of London. Known for its eco-conscious spirit (named European Green Capital in 2015), the city brings a mix of protest, party and local pride.

Though an application for a sound system licence was denied this year, organisers and attendees are expected to push on as always. In previous years, Castle Park has been home to DJs, stalls and late-night gatherings — all powered by a sense of purpose.

• When: 12:00 pm onwards
• Where: Castle Park, Bristol

Durham 420 – Hemp Gardens

Durham's 420 scene is built on activism and integrity, with events often led by local hero and cannabis journalist Simpa Carter. His gatherings don't just celebrate the plant — they challenge its criminalisation and push boundaries in the UK's evolving cannabis narrative.

This year, festivities return to the Hemp Gardens in Old Elvet for a powerful and peaceful demonstration. Expect guest speakers, cultural expression, and a strong sense of purpose.

• When: 12:00 pm – 5:00 pm
• Where: Hemp Gardens, Durham Regatta, Elvet Waterside

Channel Islands 420 – Guernsey

Returning after last year's successful debut, Guernsey is hosting its second 420 celebration at the Hougue du Pommier Hotel. This event is notably family-friendly, blending fun and food with political dialogue.

Organised by the Guernsey Drug Strategy Campaign, this year's festival includes a Q&A panel with local politicians — an opportunity to engage leaders on cannabis reform directly. There'll also be DJs, food stalls, speakers, and even an Easter egg hunt for the little ones.

• When: 12:00 pm – 6:00 pm
• Where: Le Pommier Hotel, Guernsey

Leeds 420 – Woodhouse Moor

In Leeds, 420 gatherings have become a tradition — particularly at Woodhouse Moor, a large park near the University of Leeds. While no formal event has been announced, hundreds have gathered for a relaxed afternoon of music, sunshine, and shared joints on the grass in previous years.

Bring a speaker, some snacks, and something to smoke with — whether it's a joint, a vape for cleaner sessions, or a pipe.

• When: Informal, all-day
• Where: Woodhouse Moor, Hyde Park, Leeds

420 in Manchester

Manchester's 420 celebrations have become increasingly chaotic and exciting in recent years. Last year, we saw multiple gatherings, including one at Platt Fields in Fallowfield and another at Hulme Park, which featured live DJs and MCs.

Whether or not something official is announced this year, at least one major crowd will likely be forming somewhere in the city. Keep an eye on the Mannijuana Facebook group for updates.

• When: TBA – check social channels
• Where: Platt Fields, Hulme Park or elsewhere in Manchester

Is Weed Legal in the UK in 2025?

Let's get one thing straight: despite the growing popularity of 420 UK events and increasing public support for cannabis reform, weed is still illegal in the UK in 2025.

What does the law say?

Cannabis remains a Class B controlled substance under the Misuse of Drugs Act 1971. This means that being caught in possession of cannabis — even just a tiny amount — could lead to:

• Up to 5 years in prison
• An unlimited fine
• Or both

In most cases, police will issue a warning or a £90 on-the-spot fine if it's your first offence. But don't get it twisted — 420 may be a symbolic date, but it doesn't come with legal immunity. Lighting up a joint in a public park is still very much against the law.

What about medical cannabis?

Since late 2018, medical cannabis has been available via prescription in the UK. Patients with a valid prescription are permitted to use cannabis legally, thanks to amendments made to the Misuse of Drugs Act. For these patients, 420 can also be a powerful moment to raise awareness of the barriers that those seeking access to life-changing treatment face.

Do police actually arrest people at 420 events?

While technically you can be arrested at a 420 UK gathering, enforcement is often more relaxed — especially at large-scale events like Hyde Park 420. Most years, despite tens of thousands of attendees, arrests have been in the single digits.

In cities like Durham, police forces have taken a more pragmatic approach. Durham Constabulary announced they would stop actively targeting people for low-level cannabis possession or home growing for personal use — a quiet yet meaningful shift in tone that reflects the direction many hope the country is heading.

Final Thoughts – Looking Ahead to 420 UK 2025

As 420 approaches, we're genuinely excited to see how events across the country unfold. Every year, this day offers cannabis lovers the opportunity to make new friends, learn more about something they're passionate about, and feel part of a wider community. It's a rare moment of openness — where thousands gather across parks and cities to celebrate weed and stand for something greater.

420 UK continues to show the nation that cannabis users are not criminals or stereotypes. They are students, professionals, creatives, carers — people who contribute meaningfully to society. Coming together on this day sends a clear message: cannabis culture is responsible, diverse, and deeply rooted in community values.

It's also a time for reflection. On the people who have worked tirelessly to push for cannabis reform. On the stories of patients who fought for access. And on the pioneers we've lost, whose legacy still shapes the movement.

One of those figures is Lee Harris, who passed away in 2024. Lee Harris was a tireless campaigner for cannabis legalisation, the creator of the UK's first cannabis shop — Alchemy in Portobello Road — and a former London mayoral candidate. For decades, he stood as a pillar of peaceful protest and compassionate reform, helping lay the groundwork for the freedoms many now enjoy. His memory will undoubtedly be felt across every 420 gathering this year, especially in London, where his work began.

We can't wait to see how 420 2025 unfolds — and we'll be there alongside you, celebrating a plant, a culture, and a future worth fighting for.