The retail sequential test: town centre first in practice

The retail sequential test asks an applicant to show that there is no suitable site in a town centre, and then no suitable site on the edge of one, before an out-of-centre location can be considered. It applies to main town centre uses proposed outside a centre where the development is not in accordance with an up-to-date development plan. The National Planning Policy Framework requires applicants to be flexible on scale and format, and requires local planning authorities to refuse where the test is failed.

For a business looking at a unit on a retail park or a former industrial building, this is usually the first hurdle and often the only one that matters.

What the test requires you to demonstrate

The sequence of preference runs from town centre sites, to edge of centre sites accessible and well connected to the centre, to out of centre sites, with preference among the last group for locations that are accessible and well connected to a centre.

Three obligations sit inside that.

Search properly. The search area has to reflect the catchment the proposal serves, and a search confined to a single street or a single town when the proposal draws from a wider area will not satisfy an officer.

Be flexible. The Framework expects flexibility on scale and format, which means you cannot rule out a town centre site simply because it is smaller than the unit you had in mind or laid out differently.

Show suitability and availability. A sequentially preferable site fails only if it is unsuitable for the development proposed or unavailable within a reasonable period. Both limbs need evidence, not assertion.

Main town centre uses cover retail, leisure and entertainment, offices, and arts, culture and tourism development. The definition sits in the Framework glossary and it is wider than shops.

Defining the catchment and the search area

Start from where the customers come from, not from where you would like to build.

A convenience store serving a five-minute drive time has a small catchment and a correspondingly small search area. A comparison retailer or a leisure operator drawing from a district has a larger one, and the search has to cover the centres within it.

Use the development plan's own retail hierarchy as the framework, because the authority will. Where the plan identifies a town centre, district centres and local centres, the search should work through them in the order the plan sets, and the applicant should say which centres were examined and why any were excluded.

Evidence the search itself. Agency records, marketing particulars, correspondence with landlords and dated site inspections all show that the exercise was real. A table listing sites with a one-line reason for rejection, and nothing behind it, reads as a document produced after the location was chosen.

Edge of centre and how distance is judged

Edge of centre has a defined meaning in the Framework glossary. For retail purposes it means a location that is well connected to and within easy walking distance of the primary shopping area, and the glossary uses 300 metres as an indicative measure of that distance. For other main town centre uses the reference point is the town centre boundary.

Distance is not the whole test. A site 200 metres from a primary shopping area but separated from it by a dual carriageway with no crossing is not well connected. A site 350 metres away on a continuous pedestrian route through an existing shopping street may be.

Measure along the walking route rather than in a straight line, and show the route on a plan with the crossings marked. Officers and inspectors respond to that far better than to a radius drawn on an aerial photograph.

Flexibility, realism and where the argument fails

The flexibility obligation is the part applicants underestimate.

An operator whose model requires 1,400 m² on a single floor with 80 parking spaces has, in effect, defined the answer before the search begins. Where the format itself excludes every centre in the catchment, the authority is entitled to ask whether the format has been tested at all.

That does not mean an applicant must abandon a viable business model. The Framework does not require flexibility to the point where the proposal ceases to be the proposal. What it does require is that the operator shows what was considered and why each option was rejected, in terms that are about the site rather than about preference.

Disaggregation is the related argument, and it has limits. National guidance does not require an applicant to demonstrate that a scheme could be broken into separate parts on separate sites, and inspectors have generally resisted attempts by authorities to insist on it. But an applicant who has combined several unrelated uses into a single application to defeat the sequential test can expect that to be noticed.

Evidence that satisfies an officer

A sequential assessment that lands well tends to contain the same components.

1. A statement of the proposal, its floorspace and the uses within it, with any element that is truly ancillary identified.
2. A catchment definition supported by drive-time or walk-time analysis and by the retail hierarchy in the development plan.
3. A schedule of every site and unit considered, with its address, area, planning status, availability and the reason it was rejected.
4. Evidence for each rejection, meaning marketing particulars, landlord correspondence, a photograph, or a note of the conversation with the agent.
5. A plan showing the centres, the boundaries, the site and the walking routes.
6. A conclusion that addresses suitability and availability separately for the closest contenders.

Where the proposal also crosses the impact threshold, a Retail Impact Assessment is needed alongside the Sequential Test, and the two documents must use the same catchment and the same floorspace figures. Officers notice when they do not.

An Economic Impact Assessment can support the wider case on jobs and investment, but it does not answer the sequential question and should not be presented as if it does.

Appeals and what they show

Sequential test refusals are appealed regularly, and the decisions are indicative of how inspectors approach the issue rather than binding precedent.

The pattern in successful appeals is usually a search that was demonstrably wide, evidence of real engagement with agents and landlords over a sustained period, and a clear explanation of why a specific site was unsuitable in physical terms rather than commercial preference. Failures tend to involve a search area drawn too tightly, a rejection reason that amounts to the unit being smaller than wanted, or evidence dated after the application was submitted.

Start the search early, keep the correspondence, and write down the reason each site was rejected on the day you reject it. Reconstructing that record eighteen months later is the single most avoidable weakness in this part of the evidence base.

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This is general guidance, not legal advice. Check the position with your local planning authority or a qualified professional before relying on it. Enter your postcode on PlanScope to see which reports a site is likely to need.