When it comes to the training and recognition of mediums, there is almost no way around Britain. This is where organised Spiritualism has its deepest roots, where its oldest institutions stand – and where mediumship has been assessed through structured procedures for over a century. Three organisations shape this field: the Spiritualists' National Union (SNU), the Institute of Spiritualist Mediums (ISM) and the Spiritualist Association of Great Britain (SAGB). This article introduces them, shows what each one tests – and explains how they differ from the science-oriented US procedures such as the Forever Family Foundation or the Windbridge Research Center.
Two worlds of "certification"
First, the key to understanding it: when people in the US speak of "medium certification", they usually mean a blinded accuracy test – the medium reads for unknown sitters and the hit rate is measured. The British bodies work differently. For them, the live demonstration before experienced assessors is central: the medium performs their work in a service or examination setting, and trained observers judge whether the messages are evidential and cleanly delivered. Both have value – but they are not the same thing. British accreditation is a practitioner and professional recognition, not a scientific blind test.
Spiritualists' National Union (SNU)
The SNU was founded on 18 October 1901 and is today one of the largest Spiritualist organisations in the world. Its motto is "Light, Nature, Truth". It is at once a religious body, a training provider and an examining authority – and it runs what is probably the best-known training centre in the field, the Arthur Findlay College at Stansted Hall (Essex), a magnet for mediums from all over the world since 1964.
The SNU awards a tiered system of qualifications. The two central mediumistic awards are:
- CSNU – Certificate of the SNU. The foundational recognition. Among other things, candidates must establish, within 15 minutes, two separate evidential communications to two different recipients and give a suitable prayer for a Spiritualist service.
- DSNU – Diploma of the SNU. The higher tier, requiring evidential mediumship to a high standard – including the ability to establish the correct recipient reliably and efficiently.
There are also further awards for other roles, such as OSNU (Officiant, for conducting ceremonies), MSNU (Minister) and LSSNU (for long service). The SNU stresses that its award holders are trained, tested and committed to high standards – a claim that makes UK accreditation a recognised mark of quality.
Institute of Spiritualist Mediums (ISM)
The ISM was founded in 1956 – initiated by the London medium Bertha Harris together with Ben Harrington and Russell Harwood, who wanted to create an organisation specifically to support mediums. On its 25th anniversary in 1981 it took its present name. Unlike the SNU, the ISM is not a religious body but focuses entirely on the training, development and quality assurance of mediumship.
At the heart of the ISM is its accreditation path: through workshops, home circles and so-called fledgling assessments, mediums are developed step by step until they can apply for the status of a Registered Approved Medium (ISM/RAM). At the assessment meetings held several times a year (usually in March, June and September), candidates demonstrate their work before experienced assessors. RAM registration is intended to reliably signal to the public that a medium has mastered their craft and works with integrity.
Spiritualist Association of Great Britain (SAGB)
The SAGB is the oldest of the three – founded on 10 July 1872, originally as the Marylebone Spiritualist Association (MSA) by C. I. Hunt. It thus reaches back to the early days of modern Spiritualism. Its stated purpose: to provide, through mediumship, evidence of the survival of the personality after death, and to relieve suffering through spiritual healing.
For mediums, the SAGB is relevant above all as a platform and assessing body: anyone who wishes to work for the Association and be listed as an approved medium must first demonstrate their evidential work to the SAGB's standards. For decades it has been one of the most important addresses for public demonstrations and private sittings in London – a name with historical weight.
The three compared
- SNU (1901) – the broadest in scope: religion, training (Arthur Findlay College) and a formal, tiered award system (CSNU/DSNU). The most comprehensive "package".
- ISM (1956) – the most focused on the craft development and accreditation of individual mediums (the path to Registered Approved Medium).
- SAGB (1872) – the most tradition-steeped institution, closely tied to public demonstration, healing and private sittings.
What they all share is the British principle: what is tested is demonstrated, evidential mediumship before knowledgeable assessors – not an anonymised hit statistic.
What UK accreditation is worth – and what it isn't
The British bodies stand for a long, serious tradition and for verifiable minimum standards in an otherwise entirely unregulated market. An SNU, ISM or SAGB recognition is therefore a serious quality signal: it shows that someone has demonstrated their ability before experienced examiners and committed to a code of conduct. At the same time, the honest framing holds: this is an in-house practitioner accreditation, not a blinded, peer-reviewed scientific test. Those seeking maximum methodological rigour will find it more in the research-oriented US procedures – those seeking an established, lived professional recognition are in the right place in the UK. How to recognise quality in practical terms is described in our guide "How do I recognise a serious medium?".
For mediums: which path?
Anyone aiming for a British recognition usually begins with training – often through courses at the Arthur Findlay College or in a development circle – and then works toward the examinations. Realistic timeframes and practice paths are described in our article "Can clairvoyance be learned?". For a compact overview of all the serious assessing bodies – British and American – see the overview of certifications.
Sources:
• Spiritualists' National Union: About / Mediums / Awards(link).
• Institute of Spiritualist Mediums: About / Accreditation(link).
• Spiritualist Association of Great Britain: History / Mediums(link).
• Wikipedia: Spiritualists' National Union, Arthur Findlay College, Spiritualist Association of Great Britain.
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