The Regulator That Accepts Any Test Proving C1

Every English requirement in this series works the same way. The body names the tests it accepts, and nothing else counts.

One does not. The osteopathy regulator names a level, and says any test that demonstrates it will be sufficient.

SpeakShark is free for the skill any of those tests will be measuring, three AI conversation sessions a day with no card.

In this guide: the sentence · closed lists · why it matters · still strict · the catch · who benefits · limits · method · FAQ

Key takeaways

The GOsC sets a level, C1, rather than a list of accepted exams.
Any test demonstrating C1 will be sufficient, in its own words.
Its named tests are examples: IELTS, TOEFL and three Cambridge qualifications.
IELTS is preferred, and the floor is 7.0 with nothing below 7.0.
Every other regulator we read runs a closed list.

The sentence that opens the door

The General Osteopathic Council sets out its requirement, gives a table of tests with minimum levels, and then adds this:

Whilst any test demonstrating that you meet level C1 of the Common European Framework for Languages will be sufficient, the preferred testing system of the GOsC is the IELTS system.

Read the first half of that sentence carefully. It is not saying that the listed tests are the accepted ones. It is saying the listed tests are examples of how to satisfy a standard that is defined by the level, not by the provider.

The framing on the page supports it. The tests are introduced as some examples of these tests, together with the minimum grade or level which is considered acceptable, after the requirement itself has already been stated as you must be able to demonstrate level C1.

The standard is the level. The tests are illustrations.

What everybody else does

Set that against the other UK regulators we have read.

Regulator	Accepted tests	List type
GOsC, osteopathy	any test demonstrating C1, with examples	open
HCPC, fifteen professions	IELTS, TOEFL iBT, OET for six professions	closed
GDC, dental	IELTS Academic	closed
GPhC, pharmacy	IELTS Academic, Pharmacy OET	closed
RCVS, vets	IELTS, veterinary OET	closed
GMC, doctors	IELTS, OET Medicine	closed
Home Office, immigration	five approved SELT providers	closed

Six closed lists and one open standard.

The immigration list is the strictest version of a closed list, since it names five providers and adds conditions about which side of the border you took the test on, covered in the provider split. The HCPC's is closed at the level of both the test and the profession, since OET is available to six of its fifteen professions and no others, covered in speech therapists against doctors.

Why an open standard matters

The difference is invisible until you hold a certificate from an unlisted provider.

Under a closed list, a result from a provider who is not named is worth exactly nothing. It does not matter how rigorous the test was, how well you scored or how clearly it maps to a level. There is no argument to make, because the list is the rule. We made the same point about EF SET in what a free test buys you, and about the Oxford Test of English in modular and permanent, and it applies to both regardless of their quality.

Under an open standard, the question changes into one that has an answer. Does this test demonstrate C1? That is a question about evidence rather than about membership, and evidence can be produced.

There is a second, quieter consequence. A closed list goes stale. Every time a provider launches a product or rescales a test, the list-keeping bodies have to republish, and until they do, candidates are stuck. TOEFL rescaled on 21 January 2026 and regulators had to restate their numbers, covered in TOEFL's new 1 to 6 scale. LanguageCert replaced a SELT product in July 2025 and the Home Office had to publish a transition, covered in English certificates that expire.

A standard expressed as a level does not go stale in the same way, because the level is stable while the instruments move.

Open does not mean easier

Worth stating plainly, because the two get confused.

The GOsC's IELTS requirement is 7.0 with no element below 7.0. That is a flat floor with no slack anywhere, and it is stricter than the dental and most HCPC requirements, which allow 6.5 in each area.

Regulator	IELTS floor
HCPC, fourteen professions	6.5
GDC, all seven dental groups	6.5
GOsC, osteopathy	7.0 in every element
GPhC, pharmacy	7.0 in every area
GMC, doctors	7.0, with 7.5 overall

Open refers to which instruments are admissible. It says nothing about where the bar sits, and here the bar sits high.

The burden moves to you

The open standard is a genuine advantage and it comes with an obvious cost.

Under a closed list, satisfying the requirement is a lookup. Your test is on the list, your score is above the number, done.

Under an open standard, if you go outside the examples, you have to show that your test demonstrates C1. That means producing whatever the provider publishes about alignment, and hoping the assessor agrees. There is no published procedure for that on the page.

Which is why the second half of the sentence matters as much as the first. The GOsC names IELTS as its preferred testing system, and a preferred route is the one an assessor reads every week and is least likely to query.

Who this actually helps

Somebody already holding a good result from an unlisted provider, who would otherwise have to sit a second exam for nothing.
Somebody whose local market is not well served by the two or three providers everybody else names.
Somebody caught by a rescale or a product change, where the level is stable even when the numbers move.

It helps nobody who has not sat anything yet. For that person the advice is the same as everywhere else: take the preferred test, and clear the floor.

Whichever test that is, the element with the least slack for most candidates is speaking, because it is the one that does not improve by reading quietly. Role play scenarios and a daily speaking partner are the practical routes, testing your speaking level free shows the gap, and CEFR levels for speaking explains what C1 actually describes. IELTS for UKVI by CEFR level maps bands to levels, one level and four TOEFL numbers works through the same regulator's TOEFL row, and what C2 actually means sets the level above. For how examiners mark spoken English, Cambridge speaking criteria by level works from real scored candidates.

What we could not verify

We did not test the open standard in practice. The page says any test demonstrating C1 will be sufficient. How an unlisted result is assessed, and by whom, is not published.

No procedure is given for demonstrating alignment. A candidate going outside the examples has no stated route to follow.

We did not check whether other regulators hold unpublished discretion. Several say they will consider new sources of evidence, which is not the same as an open standard but is not a flat refusal either.

The page carries no visible date. We have not established when the requirement was last reviewed.

We did not verify the Cambridge equivalences. The GOsC names C1 Advanced, Business Higher and ESOL Skills for Life without stating grades.

This is not registration advice. It is a reading of published requirement pages, all linked below.

How we researched this guide

We nearly missed this, because the sentence sits after the table.

By the time you reach it you have already read the numbers, which is what you came for, and the paragraph underneath looks like a note about preference. The finding is in its first clause and the preference is the second half.

It only became visible as a finding because we had six other regulators in hand. One body saying any test demonstrating the level will be sufficient reads as a helpful aside. The same sentence, read after six closed lists, is the only page in the set that is not doing membership checking.

We then checked whether open meant lower, because that is the natural assumption, and it does not. The GOsC's floor is 7.0 in every element, which is among the higher bars in the set. Open and strict are separate axes and this page is one of each.

We also went back through the other regulators for anything similar. Two of them say they will consider new sources of evidence and will consult before changing their guidance, which is a promise about the future of a closed list rather than an open standard, so it did not go into the table as one.

Practise speaking, from SpeakShark

SpeakShark is an AI English speaking practice app, and an open standard is the clearest statement in the series of what these requirements are actually about.

The regulator is not asking which exam you sat. It is asking whether you are at a level. The exam is a way of finding out.

We cannot certify that level and we do not pretend to. What we can do is the part that moves it: unscripted conversation, often enough to matter.

You talk, the AI answers what you actually said, and you get speaking feedback while the conversation is still running. The free tier gives basic feedback; the detailed pronunciation and grammar breakdown is on Premium.

Being straight about the limits: a free session runs five minutes with four turns, we issue no certificates, and nothing here is a test any regulator will accept, open standard or not.

Start free with three sessions a day and no card. Paid sessions run ten minutes with unlimited turns. Limits are on the pricing page, and how it works walks through a session. Sign up here if C1 is the level you are working towards.

We are a speaking improvement tool. We are not an exam preparation provider, and we are not affiliated with Cambridge English, the IELTS partners, Pearson or any exam board. For test format, booking and official practice material, go to the exam body directly. Use SpeakShark to make your spoken English stronger, and use official material to learn the test.

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Sources

General Osteopathic Council, English language requirements: the requirement to demonstrate level C1, the presentation of the listed tests as examples, the statement that any test demonstrating C1 will be sufficient while IELTS is the preferred testing system, the IELTS Academic floor of 7.0 with no element below 7.0, and the TOEFL and Cambridge examples
HCPC, certificate of English language proficiency: the closed list of three accepted providers and the restriction of OET to six of fifteen professions
GPhC, guidance on evidence of English language skills, June 2025: the closed list of IELTS Academic and Pharmacy OET, and the undertaking to consult before adding new sources of evidence
RCVS, English language requirements: the closed list of IELTS and the veterinary version of OET
GOV.UK, prove your English language abilities with a secure English language test: the five approved providers for immigration, the strictest closed list in the comparison

FAQ

Does any UK regulator accept English tests outside a named list?

The General Osteopathic Council does. Its page states that whilst any test demonstrating that you meet level C1 of the Common European Framework will be sufficient, its preferred testing system is IELTS. The tests it lists are presented as examples rather than as the only options.

Why does that matter if IELTS is preferred anyway?

Because it changes what happens when your certificate is not on a list. Under a closed list, a result from an unlisted provider is worth nothing however good. Under an open standard, the question becomes whether the test demonstrates the level, which is an argument you can actually make.

Which tests does the GOsC name as examples?

IELTS Academic at 7.0 with no element below 7.0, TOEFL iBT with listening 22, reading 24, speaking 25 and writing 24, and from Cambridge English the C1 Advanced qualification, Business Higher, and ESOL Skills for Life. All are presented as demonstrating level C1.

How is that different from other UK regulators?

Every other one we read names a closed list. The HCPC accepts IELTS, TOEFL and OET only. The GDC directs applicants to IELTS Academic. The GPhC names IELTS and Pharmacy OET. The RCVS names IELTS and the veterinary version of OET. None of them invites evidence from a test they have not named.

Does an open standard make the requirement easier?

Not on the numbers. The GOsC asks for 7.0 with no element below 7.0 on IELTS, which is one of the higher floors among UK regulators and stricter than the dental and most HCPC requirements. Open is about which instruments are admissible, not about where the bar sits.

Should I still take the preferred test?

Usually yes. A preferred route is the one an assessor reads most often and is least likely to query, and the burden of demonstrating that an unlisted test proves C1 falls on the applicant. The open standard is most useful to somebody who already holds a good result from an unlisted provider.