April is here, summer time has begun, and the sun seems to have finally settled over London—perfect timing to enjoy the city’s many outdoor green activities, from nature walks to green events.
Whether you’re into vintage fairs, volunteering, exhibitions, guided walks, or thought-provoking talks, there’s something for everyone in our growing Green Monthly Calendar—soon to be relaunched in a fresh new format! Explore inspiring events across London that celebrate sustainability, nature, and climate action.
And if you’re organising something green, we’d love to hear from you—get in touch to be featured!
We’re also thrilled to be hosting The Green Londoner’s very first event on 12 April by the river—scroll down for all the details!
LNHS walk – Spring plants
Interested in exploring nature in more depth on Hampstead Heath? Join the London Natural History Society for a free guided walk focusing on spring plants, with regular ecological surveys and nature walks open to all—meeting outside Hampstead Heath Overground station.
📅 Date: Saturday 5 April – 10:30 – 15:00
📍 Location: Meeting outside Hampstead Heath Overground station, 4 South End Rd, London, NW3 2PY
🔗 More info
Frock Me! Vintage Fashion Fair
Frock Me! is London’s original vintage fair, known for its curated selection of antique and designer fashion. It returns to Chelsea Old Town Hall in April 2025 with over 60 top dealers from the UK and beyond.
📅 Date: Sunday 6 April
📍 Location: Chelsea, Chelsea Old Town Hall, King’s RoadLondon, England, United Kingdom
🔗 More info
Immersive Landscapes
This Easter, the National Gallery invites families to Immersive Landscape—a free, interactive experience running from 8–17 April 2025, inspired by the landscapes of José María Velasco. Through projected scenery and hands-on activities, visitors of all ages can explore nature through sound, movement, and imagination.
📅 Date: From 8 April
📍 Location: The Roden Centre for Creative Learning The National Gallery, Trafalgar Square
London WC2N 5DN🔗 More info
Conservation and Rewilding in a Changing Climate
Climate change is the greatest emerging threat to biodiversity, pushing species and ecosystems into unprecedented conditions that may render their historical ranges unviable. In this talk, Professor James Bullock introduces the concept of Survival Ecology and explores three interconnected approaches to rethinking conservation in a rapidly changing world.
📅 Date: Thursday, 10 April / 6-8pm
📍 Location: The Linnean Society of London Burlington House, Piccadilly London W1J 0BF
🔗 More info
Volunteering Afternoon by the Thames by The Green Londoner
A full afternoon of activities by the river focused on water pollution awareness, artistic trails, citizen science, and community engagement. Come lend a hand, learn about local ecosystems, and meet others passionate about protecting London’s rivers.
📅 Date: Saturday, 12 April – 2.30pm
📍 Location: River Thames (meeting point at Riverside Studio)
🔗 More info
Getting ‘Batty’ at Battersea: An evening bat adventure
Come learn how to use bat detectors to spot their squeaky echolocation calls with us, and how to identify different species.
📅 Date: 23 April
📍 Location: The Bandstand, The Bandstand London SW11 4NJ
🔗 More info
Shade the UK Exhibition
Rising temperatures are creating serious challenges for our cities—affecting health, comfort, infrastructure, and deepening inequalities. Shade the UK, in partnership with the British Blind and Shutter Association (BBSA) and Melting Metropolis, is launching an exhibition exploring how shade can offer simple, effective solutions to urban heat.
📅 Date: Until 24 April, free
📍 Location: Building Centre, 26 Store St, London WC1E 7BT, Gallery 2 – Lower ground floor
🔗 More info
Experiments in Utopia
This event is part of Spring at the Barbican: Concrete Garden—a series inviting you to retreat from the city’s noise and step into a season of growth and transformation. Explore talks, performances, films, and workshops focused on the history and evolving practice of intentional community building.
📅 Date: Sunday, 27 April
📍 Location: Conservatory Barbican
🔗 More info
Generation Hope (Natural History Museum)
A multi-day programme of talks, workshops, and youth-led climate action at the Natural History Museum. Generation Hope gives a platform to young people shaping the future of our planet.
📅 Dates: Tuesday 29 April- Saturday 3 May, free
📍 Location: Natural History Museum
🔗 More info
Innovation Zero
A major conference bringing together industry leaders, innovators, and policymakers to accelerate solutions for a low-carbon economy.
📅 Dates: 29–30 April
📍 Location: Olympia London
🔗 More info
