Closing the Loop
You've been invited to a hackathon to co-create solutions to London's textile waste problem.
A day to fix what awareness campaigns can't.
A curated, full-day session bringing together 25 leaders across textiles, retail, and the circular economy to solve three specific, evidence-backed problems in London's clothing disposal system. Each brief is framed as a How Might We question — a concrete design challenge backed by behavioural research.
The research, briefly
Studio Zao was commissioned by ELWA and NLWA to go beyond awareness and map exactly how Londoners dispose of unwanted clothing and where the system fails them.
We surveyed 1,014 Londoners, conducted in-depth interviews, and consulted major organisations across the sector.
The result: four behavioural personas, a systemic friction map, and three challenge briefs.
"Londoners aren't binning clothes because they don't care. They're binning them because the system has made every other route harder than the bin."
Who throws clothes away, and why
The hack focuses on The Accumulator, The Ethical Keeper, and The Seasonal Clearer, the three personas with the greatest capacity for behaviour change.
One day. Three problems. Real solutions.
This is the culmination of the ELWA/NLWA venture-building project. We have done the research. Now we need the room.
On hack day, 25 invited leaders will work in three focused working groups, one per brief, to develop viable, stress-tested concepts.
The goal is not a polished deck. It is a set of ideas with real commitments to build business cases and take them forward.
A day designed to move things
These problems are not solved by better awareness campaigns or more app features. They are structural and they need cross-sector thinking.
If you are working in this space and have been frustrated by how slowly things move, this is a day designed to move them.
Closing the Selling Gap
"How might we make disposing of a garment circularly as low-effort as buying one, without forcing people to become sellers?"
Most Londoners who want to dispose of clothes circularly face a basic asymmetry: buying is frictionless, but selling, donating, or passing on a garment takes effort, knowledge, and time. The result is a growing pile of clothes that never move. This brief asks what it would take to close that gap, without requiring people to become resellers.
The Accumulator is London's most fashion-engaged persona. They buy frequently across multiple channels and build up wardrobes faster than they clear them. They are not indifferent to sustainability, many actively want to dispose of clothes responsibly. The problem is that the effort required to do so consistently outweighs the perceived reward. Clothes pile up in bags that never move.
"I never really throw my clothes away before."an Accumulator we interviewed
Why this persona for this brief
The Accumulator's problem is structural, not motivational. They have the intent. They lack a route that matches the ease of buying. 96.6% are responsive to peer and tech-based interventions, making them highly reachable through digital channels. They already buy secondhand at high rates, but the reverse flow, selling or passing on, stalls at the effort barrier.
The acquisition gap — Accumulator profile
The Ethical Keeper is the most values-aligned persona in the research. They are environmentally motivated, deliberate about what they buy, and already using circular routes like Vinted and charity shops. But there is a hidden tension: they buy secondhand at high rates while selling at much lower rates, and many feel a quiet distrust of institutional donation routes. The gap between their values and their actions is a trust and friction problem, not a motivation problem.
"I just feel like I'm giving it to an establishment."an Ethical Keeper we interviewed
Why this persona for this brief
The Ethical Keeper's barrier is specifically about the destination, not the effort. The feeling of giving something to an institution with no visibility of where it goes or who benefits is enough to stall action. A solution that makes the recipient visible or the route transparent directly addresses this. They are 100% responsive to values-based framing, but that framing must be honest and specific, not performative.
Data context
Where they can be reached
Where clothes are going now
Areas for exploration
Design constraints
- Must serve the post-acquisition moment (the bag that does not move), not the acquisition moment.
- Do not lead with identity or values framing.
- Design for circular flow, not platform churn.
The Clearout Occasion
"How might we create clear-out occasions that trigger action for people who tend to dispose in large batches only when something prompts them?"
Some Londoners do not have a disposal problem. They have a trigger problem. When they do clear out, they do it well: large batches, mostly circular routes, low waste rates. But without an external prompt, the clearout never happens. This brief is about creating the occasion, the moment, the infrastructure, the social context, that converts intent into action.
The Seasonal Clearer is one of London's most circular personas when they act. They dispose of clothes in large batches, mostly through charity shops, collection banks, and friends-and-family networks. Their general waste rate is just 8%, the lowest of all four groups. The problem is not their values or their routes. It is frequency: without a clear external trigger, the clearout does not happen, and bags of clothes sit packed but unmoved for months.
"It would be better if we have more than boxes."a Seasonal Clearer we interviewed
"I feel kind of shy going to the charity shop to donate."a Seasonal Clearer we interviewed
Why this persona for this brief
The Seasonal Clearer is the primary target because their problem is exactly what this brief addresses: not a values gap, not a knowledge gap, but an occasion gap. 92.3% are responsive to habit-building interventions. The infrastructure to capture their clothes already exists. What is missing is the trigger that gets the bags out of the hallway.
General waste rate by persona
The Ethical Keeper is environmentally motivated and already fairly circular in their behaviour, using charity shops, Vinted, and community routes. They share one key trait with the Seasonal Clearer: they need the destination to feel trustworthy and transparent before they will act. They do not clear out in large batches, but when a clearout occasion is well-designed — with visible, credible destinations — they are highly likely to participate.
"I just feel like I'm giving it to an establishment."an Ethical Keeper we interviewed
Why this persona for this brief
The Ethical Keeper responds strongly to occasion-based prompts when those occasions include destination transparency. 95.3% are responsive to habit-building and peer/social interventions. The design requirement is clear: they need to know where their clothes are going. A clearout occasion that answers that question will capture this group.
Data context
How often do they clear out?
What's stopping them disposing more?
Areas for exploration
Design constraints
- The Seasonal Clearer needs occasion infrastructure, not messaging.
- The Ethical Keeper needs destination transparency, not frequency prompts.
- Same brief, two mechanisms: design for modularity.
- Physical and civic infrastructure is a design consideration, not a constraint.
Closing the Information Gap
"How might we give people quick, trustworthy confidence that their unwanted garments are worth doing something with, before questions of where they should go even arise?"
Before someone can decide where to send a garment, they need to believe it is worth sending at all. A significant share of Londoners self-exclude from circular routes not because they do not care, but because they assume their clothes are not good enough to donate, sell, or recycle. This brief targets that moment of self-doubt: the point where a garment gets binned not because there is no route, but because the person never believed there was one.
The Accumulator buys frequently and builds up wardrobes faster than they clear them. When they do try to dispose of clothes circularly, a key barrier is condition confidence: they are unsure whether their items are good enough to donate or sell, and that uncertainty tips the decision toward the bin. They are not lazy. They are stuck at the assessment step, before any routing decision is even possible.
"I'm a big, maybe too big of a shopper."an Accumulator we interviewed
Why this persona for this brief
71.8% of Accumulators face an information barrier at the disposal moment, specifically around condition and route. They have the volume and the intent, but they stall at the question: is this actually worth doing something with? A solution that answers that question quickly and credibly, before the bin becomes the default, directly unlocks this group.
Share facing an information barrier at the disposal moment, by persona
The Ethical Keeper cares deeply about where their clothes go, which is precisely why the information gap hits them hard. They will not donate to a route they do not trust, and they will not sell through a channel that feels opaque. Their high standards for destination transparency mean that vague or unverifiable claims about where clothes end up are enough to stop them acting entirely.
"Trust has been eroded. Consumers do care but they don't believe."a sector stakeholder
Why this persona for this brief
54.3% of Ethical Keepers face an information barrier at disposal. For this group the barrier is not about condition, it is about trust. They need to know that their garment will be used, not landfilled or exported. A solution that provides specific, verifiable destination information at the point of disposal will convert this group at high rates. They are already motivated. They just need the evidence.
Data context
What's blocking disposal — barrier type by persona
Areas for exploration
Design constraints
- Information alone does not change behaviour. The sector has tried leaflets and they failed.
- Any solution must collapse the gap between knowing and doing.
- The business model must depend on volume of garments moved, not volume of information produced.
- TRAID and Oxfam confirm that quality anxiety drives self-exclusion. Donors throw away rather than donate because they assume the item will not be wanted. The gap is perception, not reality.