The cables under Grantham Market Place
From the week beginning 23 February 2026, contractors began digging beneath Grantham's Market Place and the adjacent Westgate area to lay a permanent underground mains electricity supply. The work is funded by the Government's Future High Streets Fund: South Kesteven District Council received £5,556,042 in central government capital, matched by £379,092 from the council itself.
The headline purpose is straightforward. Traders at Grantham's weekly market and organisers of public events in the town centre will be able to plug directly into the grid rather than bring their own diesel generators. Both the council's own communications and BBC reporting named the same problem: noisy generators. The framing throughout was trader convenience and event quality — not accessibility, not public health.
The wider package of works — new planters, benches, accessible pathways, flower beds, and a water bottle-filling station — was not part of the original brief. These additions emerged from underspend within the Future High Streets Fund programme; a formal Project Adjustment Request was submitted to MHCLG on 7 February 2025 to release the surplus. They are welcome extras rather than the core infrastructure argument.
What changed on a market day in Grantham, then, is this: the generators are gone. The question the council did not ask — but which turns out to matter quite a lot — is who else that decision helps, and why.
Why a market-day generator is a sensory problem
Research published in 2023 by MacLennan and colleagues — a participatory study involving 24 autistic adults across seven focus groups — found that high streets and town and city centres ranked among the most commonly reported disabling sensory environments. Supermarkets, transport hubs, and eateries featured in the same list. Markets, by extension, sit squarely in this territory.
The study developed six principles for judging whether a public space enables or disables people with sensory differences: Sensoryscape, Space, Predictability, Understanding, Adjustments, and Recovery. Two of these are particularly useful for diagnosing a market-day generator.
Sensoryscape refers to the overall sensory quality of an environment — the layered combination of sound, smell, light, and movement that a person has to process simply by being there. A diesel generator contributes a persistent low-frequency mechanical hum that sits beneath the usual sounds of a market without ever fully blending into them. It is the kind of noise that is difficult to filter out because it has no natural rhythm or endpoint to signal when attention can relax.
Predictability concerns whether sensory inputs arrive in patterns people can anticipate. When a generator increases load — because a trader switches on a hot plate, or a PA system draws more power — the engine note surges without warning. That unpredictable change is, according to the framework, especially disabling: the brain must constantly monitor for the next spike rather than habituating to a stable background.
Grantham's Market Place compounds both problems. Multiple traders bring separate generators, so the acoustic load is additive across a confined footprint. The resulting environment does not resemble one difficult noise source — it resembles several overlapping ones with no synchronisation and no predictable pattern between them.
Critically, the MacLennan framework was built from the accounts of disabled people themselves, not derived from laboratory studies or clinical assumptions. That origin matters: it describes what actually makes town centres hard to use, not what researchers theorised might.
A larger group than the label suggests
The label 'autism-friendly' is tidy but misleading as a planning shorthand. Sensory processing differences are found across a wide range of conditions: they co-occur with ADHD, dyspraxia, and Tourette's syndrome, as well as autism — each carrying its own population and its own relationship with noisy, unpredictable public spaces.
Sensory processing disorder also occurs in people who carry none of those diagnoses. Sensitivity to sudden sound, strong smells, or overwhelming environments is not the exclusive property of any clinical category. A significant proportion of people affected by this kind of sensory load have never sought or received a formal diagnosis; they may simply have learnt, over time, that certain places are not comfortable to be in.
For a weekly market in a town like Grantham, that self-exclusion is easy to enact and almost invisible. Nobody registers the absence of people who quietly decided not to go. There is no complaint, no feedback form, no measurable gap — just a smaller catchment of regular visitors than there might otherwise be.
Treating sensory-friendly infrastructure as a niche accommodation for one defined group therefore underestimates both the scale of the need and the scale of the benefit. The overlap between these populations, when added together on a given market day, is likely to be considerably larger than any single diagnostic prevalence figure would suggest — and that matters for how towns plan public space.
The air quality problem diesel generators create at stall height
Noise is not the only hazard a running diesel generator introduces at close quarters. The International Agency for Research on Cancer classifies diesel exhaust as a Group 1 carcinogen — the same category as asbestos and tobacco smoke — and chronic occupational exposure is linked to elevated risks of lung cancer and COPD. For a single market day the chronic risk is marginal, but the acute effects documented by the Health and Safety Executive are relevant at exactly the distances shoppers browse: eye and respiratory irritation, coughing, headaches, fatigue, and nausea.
What makes the market setting distinct from, say, a busy road is the geometry of the stalls themselves. Canvas canopies, side panels, and the bodies of adjacent units trap exhaust rather than allowing it to disperse across open air. The practical effect is that a nominally outdoor environment behaves more like a partially enclosed one — fumes recirculate at breathing height rather than rising clear. People with pre-existing asthma or COPD face amplified acute risk in precisely this zone: close to a stall, under a canopy, at the concentration point.
Underground mains power removes the source entirely. That is a categorically different outcome from dilution or dispersal — no positioning of generators further away, no ventilation strategy, and no scheduling of generator-free hours achieves the same result.
What the standards say, and what SKDC didn't say
There is already a standard for this. PAS 6463, published by the British Standards Institution, is a design guide for making built environments more accessible to neurodivergent people. Among the stressors it explicitly names: constant background mechanical noise — the low-frequency hum and unpredictable revving typical of a diesel generator. The standard recommends acoustic zoning and quieter mechanical equipment as baseline provisions. Grantham's new underground mains supply is entirely consistent with that approach. It was not designed to meet PAS 6463. It just does.
The legal scaffolding sits a layer beneath. The Equality Act 2010 requires public spaces to make reasonable adjustments for disabled persons, and both BS 8300 — the technical standard for accessibility in the built environment — and PAS 6463 inform how 'reasonable' is interpreted by designers and planners in practice. Reducing disabling sensory barriers in a public market is precisely the kind of adjustment that framework contemplates.
South Kesteven District Council's own communications make no mention of any of this. The language throughout — in council statements and BBC coverage alike — is trader convenience and event quality: the new supply means events can be held 'without the need for noisy generators,' and traders can access mains electricity directly. No disability-inclusion framing appears in any council or planning document.
That gap is not a criticism. It is the point. An ambient infrastructure decision, taken for entirely practical reasons, produced an accessibility outcome that disability-inclusion professionals would recognise and welcome — without ever being named as one. The benefit arrived unannounced.
What ambient decisions in public space actually decide
Many comparable regeneration schemes almost certainly produce the same kind of latent accessibility benefit — and record none of it. The decisions that determine a public space's sensory baseline — power source, surface material, acoustic environment — are made long before any individual accessibility review begins. They set the conditions everyone else inherits.
That upstream quality is what makes ambient design thinking practically useful. When the default environment improves — quieter, cleaner air, more predictable — the benefit distributes without friction. Nobody has to identify themselves, request a special arrangement, or navigate an adjustment process. The accommodation happened at the infrastructure layer, before anyone arrived to need it.
The practical implication for Grantham and comparable market towns is narrow and achievable. Future High Streets Fund bids, Business Improvement District proposals, and council-managed market upgrade specifications all pass through a stage at which the sensory implications of baseline decisions — power source, surface material, acoustic exposure — could be noted in a sentence or two. That small step would not require a full disability-impact assessment or a redesign brief. It would make the latent gain visible, measurable, and reproducible rather than accidental. The cables under Grantham's Market Place were never described as an accessibility intervention. They are one nonetheless — and knowing that at the point of decision, rather than after the concrete is poured, is considerably more useful.
- [1] Sensory processing disorder. https://en.wikipedia.org/?curid=53638298 https://en.wikipedia.org/?curid=53638298
- [2] Noise pollution — Wikipedia. https://en.wikipedia.org/?curid=66599 https://en.wikipedia.org/?curid=66599