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Supply Agency vs Platform: What to Expect from a SEND Specialist

Posted on: Tue 12th May 2026

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Supply Agency vs Platform: What to Expect from a SEND Specialist

It's 7:42 on a Tuesday. A 1:1 Teaching Assistant has phoned in unwell, the pupil she supports has complex needs, and the Special Educational Needs Coordinator (SENCO) has thirty minutes to find someone safe and suitable to walk through the gate by 8:45. The supply agency vs platform decision you make next says a lot about what you value, what you'll pay for, and what risk you'll carry.

This is the supply agency vs platform question every school business manager, SENCO, and headteacher in England now faces. With the SEND reform consultation closing at 23:59 on 18 May 2026 and the new £1.6bn Inclusive Mainstream Fund landing in school budgets from June 2026, your choice of staffing partner is strategic, not just operational.

We're biased — Five Education is a specialist SEND agency in the South West. If you'd rather talk to a human about SEND supply staff for your school, get in touch. But this article is meant to work even if you don't pick us — it's the honest supply agency vs platform comparison we wish we'd had when we started.

At a glance

  • The supply agency vs platform comparison is really a comparison of different products solving different jobs — platforms for cheap, simple cover; specialist agencies for complex SEND.
  • DfE research (CFE Research, September 2024) shows average daily cost (for teachers) is £218 in primary, £291 secondary, £270 special schools — and notes schools "can often expect to pay a premium for SEND specialists in short supply".
  • From September 2026, single and multi-academy trusts must procure supply staff through RM6376, which caps agency supplier fees and sets compliance standards platforms outside it may not meet.
  • Check any agency or platform against four basics: Crown Commercial framework status, SEND training menu, named consultant, and how they handle a 7:45am crisis call.

Contents

What an automated booking platform actually is

Online booking platforms let schools post a slot and let registered educators accept it through an app. The pitch: cut out the middleman, lower the mark-up, fill the slot faster.

In any supply agency vs platform comparison, this is the headline difference. Most platforms run one of two models. Some treat themselves as employment businesses and take on the agency obligations that come with that. Others position themselves as "introductory platforms" — connecting schools and self-employed educators without taking on the safeguarding, vetting and employment-status responsibilities of an agency. The NASUWT teaching union has published guidance on online booking platforms flagging that distinction as the most important question a school can ask.

Common platform features include lower mark-ups (often disclosed openly), photo-based educator profiles, two-way rating systems, and self-service booking. The model can work well for short, low-complexity cover. It works less well when you need someone trained to support a pupil with Profound and Multiple Learning Disabilities (PMLD), or who can de-escalate a non-verbal Year 4 heading towards a meltdown.

What a SEND specialist supply agency actually does

In a supply agency vs platform comparison, the specialist agency is not just a platform with extra steps. The work is different in kind.

When a school calls us with a Tuesday morning vacancy for a TA to support a child with autism and SEMH (Social, Emotional and Mental Health) needs, a named consultant — someone who knows the school, the pupil's broad profile, and the candidate pool — runs the match. That match draws on a database of TAs we've personally interviewed, vetted on SEND suitability specifically, and trained in Team Teach (behaviour support), Makaton (signing), and trauma-informed practice.

The consultant carries the relationship. If the first candidate isn't right, the school gets a phone call, not a refund-and-rebook cycle. If the placement goes well, the next conversation starts where the last one left off.

SEND supply is a judgement-heavy business. Someone picks up the phone at 6:30am because a school needs a TA who can do a 1:1 with a child who has a Personal Emergency Evacuation Plan, knows Makaton, and stays calm when things escalate. Algorithms aren't good at that.

A note in the interests of honesty: our strongest area is SEND support staff — TAs, LSAs, HLTAs, 1:1s, and SEND teachers. We're less suited for emergency general cover. For that, a generalist agency or a platform may fit you better, and we'd rather tell you that than place someone who isn't right.

Supply agency vs platform: the cost question

Cost is where most supply agency vs platform comparisons start, and where they get most easily misread.

DfE-commissioned research (CFE Research, Use of supply teachers in schools, September 2024) found schools paid an average daily cost of £218 in primary, £291 in secondary and £270 in special schools, while supply teachers themselves received around £136, £150 and £144 respectively. The gap has driven a lot of the platform marketing — and a lot of union campaigning. The National Education Union published a report in October 2025 arguing agency mark-ups can exceed 90 per cent in some cases.

That headline is contested. Many in the sector argue real mark-ups sit nearer 25 to 30 per cent once you subtract employer National Insurance, holiday pay, pension contributions, the apprenticeship levy, and training costs from the gross gap. Mark-ups vary widely — and the only way to know is to ask.

Two practical points sit under any supply agency vs platform cost debate. First, the DfE has used the new procurement framework to cap supplier fees from September 2026 — the part of an agency's charge covering operating costs and profit, separate from the worker's pay, NI and pension. The cap is tiered by role, making agency pricing more transparent and comparable.

Second, the same DfE-commissioned research notes schools "can often expect to pay a premium for subject and other specialists, such as specialists in special educational needs and/or disabilities (SEND), that are in short supply". The right supply agency vs platform comparison isn't mark-up vs mark-up. It's what each model gives you for the total price.

A platform mark-up of 15 to 18 per cent looks cheap until you factor in the cost of doing your own deeper safeguarding checks, the staff time re-briefing every new face on the pupil's needs, and the lost-learning cost of a placement that doesn't fit. If you can absorb those, a platform is fine. If you can't, the agency mark-up is doing real work. The longer budget view sits in what the SEND White Paper 2026 means for your staffing budget.

Vetting, safeguarding and what "checked" actually means

"Vetted" is a word that does a lot of unevenly distributed work in any supply agency vs platform comparison. It can mean anything from a passport scan and an Enhanced DBS (Disclosure and Barring Service) check to a multi-stage interview, references from two recent education employers, a Single Central Record contribution, and a SEND-specific suitability assessment.

Keeping Children Safe in Education 2025 — the statutory safeguarding guidance in force from 1 September 2025 — sets a baseline every supplier must hit, including provisions on supply teachers and the allegations process. KCSIE 2026 takes effect 1 September 2026.

The four supply agency vs platform questions worth pushing on:

  1. Who carries "agency" status under the Conduct of Employment Agencies and Employment Businesses Regulations 2003? Some platforms structure themselves to avoid this. Ask in writing.
  2. How many references are taken, from what timeframe? REC (Recruitment and Employment Confederation) Audited Education and APSCo (Association of Professional Staffing Companies) Compliance+ both set written-reference standards — typically two recent references — and the Crown Commercial framework adds two-year coverage.
  3. Is the DBS check verified through the Update Service annually, or a one-off?
  4. Are candidates risk-assessed on SEND suitability specifically? A TA who is brilliant with a Year 6 class might not be the right person for a pupil with ODD (Oppositional Defiant Disorder) and a history of self-harming.

The DfE's own guidance on hiring supply teachers and agency workers sets out what to ask. Read it before any conversation.

Training: the supply agency vs platform tipping point

This is the supply agency vs platform area where 2026 changes everything, and it tilts hardest towards agencies for SEND-heavy settings.

In February 2026, as part of the Every Child Achieving and Thriving white paper, the government committed £200 million over three years for SEND training — described as the biggest SEND training offer in English education history, with a new requirement for all teachers to be trained to support pupils with SEND. National training materials launch in September 2026, with full course delivery from autumn 2027.

The supplier you choose is, indirectly, a training choice. A platform that operates a marketplace model typically passes training costs onto the educator. A specialist agency that invests in candidate Continuing Professional Development absorbs that cost — and the school benefits from staff who walk in already trained.

Our own free SEND CPD for the staff who walk into your classroom covers Team Teach, Makaton, Understanding Autism, Understanding Trauma, Speech, Language and Communication Needs (SLCN), SEND Code of Practice essentials, Prevent Duty, and Child Protection. We don't list these to boast — we list them because, by September 2026, the people supporting your SEND pupils need them anyway. The question is who pays.

The morning relationship test

There's a quick test for any supply agency vs platform comparison. We call it the morning relationship test.

When something goes wrong at 7:45 — the booking falls through, the candidate doesn't show, the school needs a same-day replacement for a pupil with complex needs — who picks up the phone, and do they know you?

With a platform, the answer is usually: the app does. You log a ticket, the system rebooks, and the educator who turns up is whoever the algorithm next surfaced. With a specialist agency, your consultant does, by name, and they know your school. They know the Year 5 group needs someone with Makaton, and that the head doesn't have time for small talk before 8:30.

That difference doesn't show up in the mark-up percentage. It shows up in the small number of mornings each term when something goes sideways and you need a human, not an interface.

The procurement and framework picture in 2026

For schools and academy trusts, 2026 is a transition year, and any supply agency vs platform comparison sits inside that transition.

The current Crown Commercial Service framework, RM6238 (Supply Teachers and Temporary Staffing), expires on 4 July 2026. Its successor — RM6376, run by the new Government Commercial Agency — went live on 30 April 2026 and runs to 29 April 2029. From September 2026, single and multi-academy trusts must procure supply staff through RM6376, as set out in the 2026 Academy Trusts Handbook.

Three practical implications:

  • The framework sets minimum standards on safeguarding, vetting and agency conduct. Suppliers outside it may not match those standards.
  • It caps the supplier fee by role from September 2026, introducing price comparability that didn't exist before.
  • Some platforms have structured themselves to fall outside framework eligibility. Some agencies have not yet been admitted. Both warrant a direct question to the supplier.

Five Education is on the RM6238 framework and has been approved onto its successor, RM6376. The practical guidance for any supply agency vs platform decision is the same regardless of which suppliers make the cut: check whether your shortlist is on the relevant Crown Commercial framework — RM6238 today, RM6376 from later in 2026. A deeper agency-selection checklist for SEND recruitment is a follow-up piece publishing later this month.

Supply agency vs platform: which fits your school?

The honest answer to the supply agency vs platform question is that it presents a false binary. They are different products solving different jobs.

A platform tends to fit better when:

  • The slot is short, the cover is general, and the pupil profile is straightforward.
  • Your school has strong in-house safeguarding capacity and is comfortable carrying more of the vetting workload.
  • Cost transparency on the supplier-fee line matters more than relational depth.
  • You want to fill last-minute generalist cover at scale.

A specialist SEND agency tends to fit better when:

  • The placement involves a pupil with complex SEND needs, an EHCP (Education, Health and Care Plan), or behaviour-support requirements.
  • You want a named consultant who knows your school and learns over time.
  • You want CPD-trained staff arriving already prepared for SEND-specific work.
  • You want a single point of accountability for vetting, safeguarding and quality.

Five Education sits firmly in the second column for SEND support staff. We've been open that this is our strongest area — not emergency general cover. If your day-to-day need is the latter, a generalist agency or platform may be a better fit, and we'll tell you so.

If you'd like to walk through your own supply agency vs platform decision, or sense-check a supplier you're already using, talk to our team about SEND supply staff. No charge for the conversation.

Supply agency vs platform: frequently asked questions

In a supply agency vs platform comparison, which is cheaper?

On the headline mark-up, usually yes. On the total cost of a placement — including in-house safeguarding work, re-briefing time, and the cost of a poor fit — it depends on the complexity of the role. For straightforward short cover, a platform can be cheaper. For SEND placements with vetted, trained staff, a specialist agency is often cheaper once you account for the work you're not having to do yourself.

Are platform teachers properly vetted?

Yes, but check what "vetted" means on the platform in question. Ask whether it operates as an employment business under the Conduct of Employment Agencies and Employment Businesses Regulations 2003, whether it takes two references from recent education employers, whether DBS checks are verified through the Update Service annually, and whether candidates are assessed on SEND suitability specifically. The NASUWT online booking platforms guidance is a useful starting list.

What is the RM6376 framework and does it matter for a supply agency vs platform decision?

RM6376 is the new Crown Commercial framework for supply teachers and education recruitment, run by the Government Commercial Agency. It went live on 30 April 2026 and runs to 29 April 2029. From September 2026, single and multi-academy trusts must procure supply staff through it. The framework sets safeguarding, vetting and conduct standards suppliers must meet, and caps supplier fees by role. Supplier inclusion on the framework is a useful filter in any supply agency vs platform comparison.

Can we split: agency for SEND, platform for emergency cover?

Plenty of schools do, and it's a sensible split. The trade-off is administrative — you're managing two supplier relationships — but it can give you the best of both. The key is being clear with each supplier about which job you're hiring them for.

How do I know if an agency is genuinely SEND-specialist?

Ask for the specific SEND training their candidates complete, the proportion of placements that are SEND-related, the schools they place into regularly, and how candidates are assessed on SEND suitability at registration. A genuine specialist will answer all four without hesitation.

If you'd rather talk through your supply agency vs platform decision than read more articles — or just sanity-check the supplier you're using now — get in touch with Five Education. We're an independent agency based in Bristol and Plymouth, covering the South West and South East Wales. We answer the phone.

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