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Using an SEN agency offers speed and flexibility, while direct hiring offers continuity and lower long-term cost. This guide compares both approaches for London schools and explains when each is the better choice for different SEN staffing situations.
The decision between using a SEN staffing agency and recruiting SEN staff directly is rarely binary for London schools. Most schools use both approaches in different circumstances. Understanding the genuine advantages and disadvantages of each helps SENCOs, headteachers and school business managers make better strategic decisions about SEN staffing rather than defaulting to agency use in all situations or trying to avoid agency use entirely.
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SEN agency use offers several advantages that direct recruitment cannot match in London. Speed: an agency can confirm a placement within hours, compared to several weeks for a direct hire. Flexibility: agency workers can be used for specific placements without the commitment of a permanent employment contract. Compliance: the agency handles DBS, references and training verification. Specialist access: agencies can supply workers with specific SEN skills and experience that may not be available in the local direct recruitment market. London’s particular SEN staffing shortage makes these advantages particularly significant.
Direct hire also has significant advantages for London schools. Lower ongoing cost per hour once recruited, as no agency margin is included. Continuity: directly employed SEN staff develop relationships with specific pupils, knowledge of their needs and investment in outcomes that agency workers rotating through the school cannot replicate. Culture and values alignment: directly recruited staff are chosen for fit with the school’s SEN approach and ethos. EHCP provision confidence: knowing that an EHCP-specified provision will be consistently delivered by a named, directly employed worker is reassuring for SENCOs, families and local authority monitors.
Agency use is appropriate when: covering a planned or unplanned absence and no internal bank cover is available; filling a specialist role for which direct recruitment would take too long; needing a worker with a specific SEN skill set that is not currently represented in the school’s staff; trialling a worker before offering direct employment; or managing a short-term increase in SEN demand. Agency use should be purposeful and time-limited rather than the default response to any SEN staffing gap.
Direct recruitment is the right choice when: a role is permanent and ongoing, particularly for EHCP-specified provision; the school wants to build a stable, consistent SEN support team; the cost of sustained agency use in a specific EHCP-specified role exceeds the cost of direct employment; or the school has identified an agency worker they wish to retain permanently. Direct recruitment takes longer and involves more upfront cost but delivers better outcomes for SEN pupils and better value over time.
When comparing the cost of agency SEN staff against direct employment in London, schools should compare total costs. The agency all-inclusive rate covers all employment costs plus the margin. Direct employment costs include basic pay, employer NI (approximately 13.8 percent), pension (typically 20 to 23 percent) and recruitment costs. For short-term or specialist placements, agency use is often more cost-effective. For long-term EHCP-specified provision, direct employment is typically cheaper over the full period of the placement.
Most London schools benefit from a strategic SEN staffing model that includes: a core of directly employed SEN TAs and LSAs delivering EHCP-specified provision and school SEN support; a small internal bank of flexible SEN workers who can cover absence; and a trusted agency relationship for contingency cover and specialist placements. This model provides the continuity and cost-effectiveness of direct employment with the flexibility and specialist access of agency supply, at a total cost that is lower than relying on agency supply for all SEN staffing.
For related information see our articles on DIY SEN Recruitment vs Agency and SEN Teaching Assistant Cost in London.
Neither approach is universally better: both are appropriate in different circumstances. Agency use is better for speed, flexibility and specialist access. Direct hire is better for continuity, culture alignment and lower long-term cost. Most London schools use a mix: directly employed core SEN staff for ongoing provision and agency supply for cover and specialist placements.
Direct SEN recruitment in London typically takes 4 to 8 weeks from advertising to the worker’s first day, depending on the role, the volume of applicants and the speed of DBS checking. For specialist roles, it may take longer. Agency cover while a direct recruitment process runs is often the most practical solution for maintaining continuity during a vacancy.
Consider converting an agency worker to direct employment when they have proved to be a strong fit with the school’s SEN provision and pupil needs, when the role is long-term and ongoing, when the relationship is stable and positive and when the cost of continued agency use exceeds the cost of direct employment. Most agency contracts include provisions for converting agency workers to permanent employment after a qualifying period, sometimes with a transfer fee payable.
Visit our SEN London Resource Hub for more guides on EHCP rights, SEN legislation, staffing costs, agency use, Ofsted expectations and borough-by-borough funding variations across the capital.
The information in this article is provided for general guidance only and does not constitute legal or professional advice. Legislation, funding and local authority policies change: always verify current requirements with the relevant authority. SENDhelp Education Limited accepts no responsibility or liability for any loss or damage arising from reliance on this content. Any links to third-party websites are provided for convenience only and do not constitute endorsement of their content.
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