Supply Chains or Profit Chains? The Hidden Cost of Supply Agencies in UK Schools

Supply Chains or Profit Chains? The Hidden Cost of Agency Dominance in UK Schools

At a time when schools across England are tightening budgets, cutting support staff, and deferring essential investments, a troubling reality is coming into sharper focus: the cost of supply teaching is rising sharply – but the people doing the work are not seeing the benefit.

According to concerns raised by the National Education Union (NEU), the current supply teacher market is not merely inefficient – it may be structurally skewed against schools and educators alike.

The Cost Illusion

On paper, some schools are paying over £300 per day, UPS teachers even more, to secure a supply teacher. In a system already under financial strain, that figure alone raises eyebrows. But what’s more shocking is what happens next.

Many supply teachers report taking home as little as £110 a day, little more than a retail assistant or apprenticeship, so despite requiring a degree and professional teaching qualification, supply teachers can end up earning only modestly more than retail workers, and in many cases, less than full-time permanent teachers.

The daily pay is substantially higher than apprenticeships, but the gap is not as wide as one might expect given the difference in qualifications and responsibilities. For many supply teachers, the pay barely reflects the skill, training, and responsibility required for the role.

That gap – sometimes exceeding 90% in markup – is not an anomaly. A Department for Education (DfE) study has suggested that markups can approach 100%, meaning schools are effectively paying double the actual wage cost.

Where is the rest going?

Market Concentration: Power in Few Hands

The supply agency market is no longer a fragmented ecosystem of small, local providers. Instead, it is increasingly dominated by a relatively small group – around a dozen large agencies – responsible for roughly half of all agency spending in England.

This level of concentration brings consequences:

Reduced competition, limiting downward pressure on fees
Standardised pricing models, often opaque to schools
Increased leverage, allowing agencies to dictate terms

For schools, particularly academies operating independently, this means fewer genuine choices and less negotiating power.

Profit Growth vs. Public Pressure

The financial trajectory of these agencies tells its own story.

Over the past three years:

Turnover has increased by more than 30%
Gross profits have surged by 55%, approaching £120 million

These are not marginal gains – they are dramatic expansions, occurring in parallel with mounting financial pressure across the education sector.

While schools grapple with deficits and staffing shortages, parts of the supply chain are thriving.

The Mechanics of Margin

Behind these figures lies a system engineered for profitability:

Umbrella contracts introduce additional layers between teacher and school
Managed service providers (MSPs) centralise bookings but often at a premium
Tiered margin structures incentivise higher fees and reduced transparency

Each layer adds complexity – and cost. Crucially, it also obscures where money is being allocated, making it difficult for schools to assess value or fairness.

The Transparency Problem

One of the most pressing concerns is the lack of visibility.

Schools often:

Do not know the exact pay rate of the teacher
Cannot see the breakdown of agency fees
Are locked into frameworks that limit direct hiring

This opacity benefits intermediaries but leaves both schools and teachers at a disadvantage.

A System Under Strain

The implications are not just financial – they are systemic.

Schools are overpaying in a constrained funding environment
Teachers are under-earning, despite high demand
Public funds are being absorbed by intermediaries, rather than frontline education

The result is a model that appears increasingly unsustainable.

What Schools and Academies Need to Consider

This is not simply a question of cost-cutting – it is about strategic awareness.

Schools should begin asking:

What proportion of agency fees reaches the teacher?
Are there alternatives, such as direct employment pools or local partnerships?
What contractual obligations limit flexibility or transparency?

Greater scrutiny is essential – not just to reduce expenditure, but to ensure ethical and effective use of resources.

The Bigger Question

At its core, this issue raises a fundamental challenge:

Should a system designed to support education be generating such disproportionate returns for intermediaries?

Until that question is addressed – with transparency, accountability, and reform – the risk is clear: schools will continue to pay more, teachers will continue to receive less, and the gap between cost and value will keep widening.

The supply teacher crisis is not just about shortages. It is about structure. And unless that structure is examined, the financial reality facing schools will only become harsher.

Contact the SMS team