Behind the maps and masterplans, behind the planting schedules and flood modelling, lies the argument that ultimately matters most: the numbers.
The proposed employment park at Bennerley is being justified on economic grounds. According to the applicant, once fully built and occupied the development could support 2,626 full-time equivalent jobs. After adjustments for displacement and labour patterns, that becomes 1,726 “net additional” roles.
On paper, that is transformative.
The Economic Benefits Statement puts the annual contribution to the regional economy at £183 million in Gross Value Added, alongside an estimated £95 million in annual wages and around £2.5 million per year in business rates revenue.
The figures are presented confidently. But as with most large-scale projections, they rely on a series of assumptions.
The site is being promoted as a mixed employment park, with warehousing, general industrial and light industrial uses. Job numbers are calculated using standard density benchmarks – how many workers are typically supported per square metre of floor space in each use class. Warehouses, for example, generally employ fewer people per square metre than manufacturing or light industrial units.
At this stage, there are no named occupiers. No confirmed tenants. The employment profile is illustrative, based on what could come rather than what will.
The adjustment from 2,626 gross jobs to 1,726 net additional jobs is where the modelling becomes more technical. The statement factors in “leakage” – people commuting from outside the area – and “displacement” – businesses that might move from elsewhere rather than create entirely new activity. It assumes zero “deadweight”, meaning none of the development would have happened anyway in the absence of this scheme.
That assumption is important. It strengthens the net benefit case. But it is, ultimately, a judgement call embedded within economic modelling.
There is also the temporary impact of construction. Over a projected four-year build period, the scheme is estimated to support hundreds of construction and supply-chain jobs and generate substantial short-term economic output.
For a region with a long industrial heritage and proximity to major transport routes, the economic narrative fits a familiar pattern: former coalfield land repurposed for modern logistics and manufacturing, capitalising on strategic road connections and labour supply.
The question is not whether there would be economic benefit. Large employment parks almost always bring some. The question is scale, certainty and trade-off.
How many of those jobs would be secure and long-term? What skill levels would they require? Would they represent genuinely new economic growth, or a reshuffling of activity across the region? And how should those projected gains be weighed against acknowledged environmental and landscape impacts?
Planning decisions rarely hinge on spreadsheets alone. But the £183 million annual contribution sits at the heart of the argument. It is the figure against which all other impacts will be measured.
In the next part of this series, we examine what the Environmental Statement itself says about those impacts – and how the visual and landscape changes have been assessed.
