Parliament Square is to become a ‘molten metaphor’ for shrinking play space and opportunities on Thursday 11 June, when hundreds of children will turn the heart of Westminster into a giant game of “The Floor is Lava” to mark the International Day of Play.

The Problem: London has lost nearly 100,000 children in the last decade.

The Metaphor: For those who stay, the city is becoming a “molten” obstacle course of traffic, “No Ball Games” signs, and disappearing play spaces.

• • • • • • • • When: 4.30pm, Thursday 11 June 2026

              • Where: Parliament Square, London SW1

              • What: A joyful, child-led parade followed by the “Floor is Lava challenge”.

LONDON: The heart of Westminster will erupt in colour and sound on Thursday 11 June as hundreds of children stage a high-stakes, giant game of “The Floor is Lava” outside the Houses of Parliament.

Marking the third annual London Parade for Play on the International Day of Play, the charity London Play is facilitating a joyful, child-led “takeover” of one of the capital’s most iconic spaces. The event is a vibrant celebration of the fundamental right to play, highlighting the ingenuity children use to find joy in an increasingly crowded capital.

The “Lava” theme highlights a sobering reality: a landmark London Assembly report (A London for Every Child) recently warned that nearly 100,000 children have left London in the last decade. Along with the cost of living and housing challenges, it noted that a hostile built environment as well as attitudes and policy limiting children’s freedom to play are contributing to families being driven away.

For those who stay, the “Lava” represents these daily physical barriers – from traffic and “No Ball Games” signs to the loss of funding for play services and spaces. The event will see children passing recycled cardboard “stepping stones” between them to build moving bridges across the square, acting as a metaphor for how they must constantly adapt to a city that often feels designed to keep them out.

“The Parade for Play is about children reclaiming their city. For three years, we have marched to show that play is a fundamental right, not a luxury. This year, we’re taking it a step further. By turning the square into a game of ‘The Floor is Lava,’ we are highlighting the ingenuity children need just to find a place to stand in London. We need more than just space; we need the time, freedom, and funding to ensure our city doesn’t become a ‘child-free zone’.”

Fiona Sutherland, director at London Play

The event, organised by London Play, brings together children from adventure playgrounds, schools, and community groups. London Play invites families, play champions, and the public to join the celebration and show their support for a more play-friendly capital. Alongside the parade and lava challenge, the afternoon will include skipping, games, and young speakers sharing their passion for play and vision for a child-friendly London.

EVENT SCHEDULE AND PHOTO OPPORTUNITIES

• 4.30pm: Arrival. Groups to arrive and gather
• 5:00pm: The London Parade for Play. A lively, child-led procession around Parliament Square featuring handmade banners, drumming, and chants.
• 5:30pm: Young speakers. Children from across London share their passion for play and vision for a child-friendly city.
• 6:00pm: The “Parliament Square is Lava” Challenge. Hundreds of children work in teams to build moving cardboard bridges across the square – a unique visual against the backdrop of Big Ben.
• 7.00pm: Event ends

ENDS

Media contact: Fiona Sutherland | fiona@londonplay.org.uk | 07445 770 105

Note to editors & photographers: The event provides two distinct visual opportunities: the vibrant procession (5.00pm featuring banners and drums, and the “Lava” bridge-building (6.00pm) with hundreds of children navigating cardboard islands against a Big Ben backdrop. A link to hi res images of previous Parade for Play events is here. A short film of the inaugural Parade for Play in 2024 is here.

Notes to editors

• • • • London Play’s vision is that every child in London has the space, time and freedom to play outside daily near to where they live. Established in 1998, the charity promotes children’s right to play, campaigns for more and better out-of-school play services and supports play work in the capital.
      • The International Day of Play celebrates children’s right to play – enshrined in Article 31 of the UN Convention on the Rights of the Child. It was celebrated for the first time on 11 June 2024, with 2026 marking the third iteration of the global event as well as of the London Parade for Play. Link to event.
      • The London Assembly Report: A London for Every Child (March 2026) found that London is losing families due to unaffordable and unsuitable housing, costly childcare, shrinking access to play, and neighbourhoods that don’t meet the needs of family life. Report is here.
      • Adventure playgrounds: there are around 70 staffed adventure playgrounds across London providing school-aged children with free exciting play opportunities and connection with nature in some of the capital’s least affluent neighbourhoods. londonadventureplaygrounds.org.uk
      • Funders and Partners: We are grateful to Trust for London, the National Lottery Communities Fund, the Forrester Family Trust, Barbara Ward Children’s Foundation, The Royal Parks and Newham Council for supporting our work – among others.