NHS Certificate of Sponsorship for Health and Care Workers: How It Works

The Certificate of Sponsorship (CoS) is the document that makes your Health and Care Worker visa application possible. Without it, you cannot apply. With a fraudulent one, you can lose tens of thousands of pounds and face deportation.

Understanding exactly how the NHS sponsorship system works — and what distinguishes a legitimate CoS from the black-market fakes that have devastated thousands of healthcare migrants — is not optional knowledge. It is essential protection.

What Is a Certificate of Sponsorship?

A CoS is not a physical document. It is a unique digital reference number generated in the Home Office's sponsorship management system (SMS) by your employer. Each CoS contains:

• The employer's sponsor licence number
• Your job title and Standard Occupational Classification (SOC) code
• Your start date and salary
• The duration of the visa being requested
• Your personal information

You enter this reference number when you submit your visa application online. UKVI then verifies the CoS with the employer directly through their system.

Who Can Issue a Health and Care Worker CoS?

Not every employer can issue a Health and Care Worker CoS. The employer must:

1. Hold a current, A-rated sponsor licence from the Home Office
2. Be either an NHS body, an NHS supplier, or a Care Quality Commission (CQC)-registered adult social care provider

You can check whether an employer holds a valid sponsor licence using the government's official Register of Licensed Sponsors: a public searchable database on GOV.UK. If a company approaches you with a job offer and CoS but does not appear on that register with an "A" rating, the document is fraudulent.

For care providers, CQC registration is an additional requirement. A care home or domiciliary care agency must be actively registered with the CQC under the relevant care category. If the CQC register shows no record of the provider, or shows their registration as "suspended," they cannot legally issue Health and Care Worker CoS documents.

How Much Does a Legitimate CoS Cost?

The government charges employers £239 to assign each Certificate of Sponsorship. This fee is entirely the employer's responsibility.

Under section 6(1) of the Employment Agencies Act 1973, it is a criminal offence for any UK recruitment agency or employer to charge a candidate a fee for finding them work. This prohibition covers:

• CoS assignment fees
• "Sponsorship processing" fees
• Visa arrangement fees
• "Agency fees" for international placements

If anyone asks you to pay for your Certificate of Sponsorship — £500, £2,000, £5,000, or any other amount — this is illegal. Reports from exploited workers describe payments ranging from £5,000 to over £10,000 for CoS documents that turned out to be for non-existent jobs, or for roles that collapsed after arrival.

The CoS Black Market: How the Scam Works

Between 2022 and 2024, a large and well-organised black market emerged in fraudulent Certificates of Sponsorship, primarily targeting care worker applicants. The UK government has since closed overseas entry for care workers (SOC 6135 and 6136) in part because of the scale of this exploitation.

The typical scam operates like this:

1. A "recruitment agency" or "consultant" on social media or WhatsApp advertises guaranteed NHS jobs with visa sponsorship arranged, for a fee
2. The victim pays the fee — sometimes in instalments, sometimes all upfront — and receives a CoS reference number
3. The victim applies for the visa, which is initially approved because the CoS appears real
4. Upon arriving in the UK, the victim finds there is no actual job. The "employer" has minimal real work available and pressures the worker to repay their "salary" or keeps demanding further fees to maintain the visa
5. The Home Office identifies the fraudulent sponsor and revokes their licence
6. The worker receives a 60-day curtailment letter and must find new sponsorship or face deportation — while still in debt from the original fees paid

Because of these practices, over 470 care companies have had their sponsor licences revoked since 2022. Each revocation displaces the workers attached to that sponsor, creating urgent 60-day windows to find new employment.

Signs of a Legitimate NHS Sponsorship Offer

Genuine NHS trusts and compliant private healthcare employers recruit through:

• NHS Jobs (jobs.nhs.uk) — the official NHS recruitment platform. Job postings here are genuine. The trust is verified. The process is transparent.
• NHS employers' own career portals — listed on individual NHS trust websites
• NHS England international recruitment frameworks — for large-scale international nurse and AHP recruitment
• Ethical registered agencies — agencies listed on the NHS Employers Ethical Recruiters list or registered with the Recruitment and Employment Confederation (REC)

Red flags that indicate a fraudulent or illegal offer:

• You are contacted out of the blue via WhatsApp, Facebook, or Telegram with an unsolicited job offer
• You are asked to pay anything upfront before seeing an employment contract
• The "employer" cannot give you the NHS trust's full legal name and you cannot find it on the NHS England provider list
• The salary offered does not align with NHS AfC pay bands for that role
• The CoS is being sold through an intermediary, not issued directly by the employing organisation

Getting Sponsored by the NHS as a Red List Country National

If you are from Nigeria, Ghana, Zimbabwe, or another WHO Red List country, legitimate NHS trusts and registered agencies are legally barred from actively recruiting in your country — they cannot advertise there, headhunt you, or offer referral bonuses to recruit you.

However, the Code of Practice explicitly permits direct application. You can find a vacancy on NHS Jobs yourself, apply independently, and if selected, be legally sponsored by that trust. The trust is not "actively recruiting" from a Red List country when they respond to your independent application.

This distinction matters enormously. Any recruiter, agency, or individual who contacts you in Nigeria, Ghana, or Zimbabwe offering to arrange NHS sponsorship is either operating illegally or running a scam. Legitimate NHS employment for Red List country nationals begins with a direct application — always.

After You Receive Your CoS

Once your employer issues the CoS:

1. Check the reference number, your name, salary, SOC code, and start date for accuracy
2. Confirm the employer's sponsor licence is A-rated on the government register
3. Submit your visa application with the CoS reference number within the validity period (CoS documents have an expiry)
4. Do not pay anything to anyone to receive or "activate" the CoS

The full application process from CoS receipt — including documents, biometrics, and processing times — is covered in the UK Health & Care Worker Visa Guide, alongside a step-by-step checklist for verifying your employer's legitimacy before you sign anything.