Quick Answer
If your UK visa is due to expire, or has been curtailed, and your employer cannot assign your Skilled Worker Certificate of Sponsorship because UKVI has delayed the sponsor licence application or CoS request, you may need to act before your permission runs out.
The Home Office Skilled Worker caseworker guidance says an applicant must normally have a CoS. It also says that if the CoS reference number has not been supplied, the applicant must provide an explanation. If the reason is UKVI delay, the Home Office may exceptionally place the case on hold pending the outcome.
This article is general information only. It is not legal advice and should not be treated as advice on your personal circumstances. Immigration rules, dates and validity requirements are strict. If your visa is expiring, has been curtailed or has already expired, get regulated immigration advice urgently.
Who This May Affect
This situation often affects migrants who already have permission in the UK and have found a Skilled Worker role, but the employer is still waiting for UKVI action before a CoS can be assigned.
Common Examples Include the Following.
- A Graduate visa holder whose permission is ending soon and whose employer is waiting for an undefined CoS allocation
- A Student visa holder who has completed, or is about to complete, their course and wants to switch to Skilled Worker
- A Skilled Worker whose employment ended, whose visa has been curtailed, and who has found a new sponsoring employer
- A worker whose new employer has applied for a sponsor licence but UKVI has not yet decided the licence application
- A migrant whose employer has requested a CoS or additional CoS allocation but UKVI has not yet processed it
The key issue is timing. If your current permission expires before you make a valid application, you may become an overstayer. If you are already on immigration bail, the Skilled Worker caseworker guidance says you are not suitable for the route because you do not hold permission to be in the UK.
What Section 3.3 of the Skilled Worker Caseworker Guidance Says
Section 3.3 of the Home Office Skilled Worker caseworker guidance deals with the Certificate of Sponsorship validity requirement. It explains that the CoS is a virtual record assigned by a licensed sponsor through the sponsorship management system.
The guidance says the CoS reference number should be provided in the application. If the applicant has not supplied it, they must provide an explanation. It then says that where the sponsor has not yet assigned a CoS because of UKVI delays, for example a delay in processing a sponsor licence application or a CoS request, the case may exceptionally be placed on hold.
This wording is useful, but it is not a promise. The word "may" matters. A caseworker can still reject or refuse an application if the validity, suitability or eligibility requirements are not met, or if they are not satisfied the missing CoS is genuinely due to UKVI delay.
Official Home Office Source - Skilled Worker Caseworker Guidance on GOV.UK.
Before Making an Application Without the CoS Reference
Submitting without a CoS number is not a normal Skilled Worker application. Before doing so, check the core points carefully and keep evidence. You should be able to explain why you cannot wait, why the delay is with UKVI, and why the Skilled Worker route is otherwise realistic.
- Your current visa date - Know the exact expiry date or curtailment deadline.
- Your employer's details - Obtain the employer name, sponsor licence number and contact details.
- The job offer - Keep the job title, salary, hours, start date, occupation code if known and written offer.
- The UKVI delay - Ask the employer for evidence of the sponsor licence application, CoS request, allocation request, priority request or UKVI correspondence.
- Switching rules - Check you are allowed to switch from your current route. Student visa holders have additional course completion and timing rules.
- Validity requirements - Use the correct form, pay the correct fee and Immigration Health Surcharge if required, prove identity and complete biometrics when instructed.
If you make a valid application before your current permission expires, section 3C leave may normally continue your existing permission while the application is pending. This is one reason timing is critical. If the application is rejected as invalid, section 3C protection may not help in the way you expected.
What to Include in the Covering Letter
A covering letter should be clear, factual and supported by evidence. The aim is to help the Home Office understand why the CoS number is missing and why you are asking for the application to be placed on hold under section 3.3.
Your Covering Letter May Need to Include the Following.
- Your full name, date of birth, nationality and current immigration status
- Your visa expiry date or curtailment date
- The employer's name and sponsor licence number
- Confirmation that the employer intends to sponsor you for a Skilled Worker role
- The job title, salary, start date and occupation code, if known
- Why the CoS reference number cannot yet be provided
- Evidence that the delay is caused by UKVI, not simply by late employer preparation
- A request for the application to be held pending the CoS outcome, relying on section 3.3 of the Skilled Worker caseworker guidance
- A promise to upload or provide the CoS reference number as soon as it is assigned
Ask your employer for documents showing when they applied for the sponsor licence, requested the CoS, requested an allocation, used priority service, contacted UKVI or received Home Office responses. The stronger the timeline, the easier it is to explain the delay.
Risks and Common Mistakes
This type of application is time-sensitive and carries risk. The main danger is assuming that section 3.3 automatically protects you. It does not. It gives caseworkers discretion to hold a case in a narrow situation where the missing CoS is linked to UKVI delay.
- Waiting until after the visa expires - This can create overstaying and may affect future applications.
- Providing no evidence of UKVI delay - A bare statement may not be enough.
- Using the wrong form - A wrong application type may be invalid or unsuitable.
- Ignoring Student switching rules - Student visa holders must meet the specific rules for switching to Skilled Worker.
- Assuming the employer's delay is UKVI delay - If the employer simply delayed preparing the sponsor licence or CoS request, section 3.3 may be harder to rely on.
- Starting work too early - Do not assume you can start the new Skilled Worker job before permission allows it.
Practical Next Steps
If your visa is close to expiry and your Skilled Worker CoS is delayed, move quickly and keep the evidence organised.
- Ask your employer for the sponsor licence number and proof of the pending sponsor licence or CoS request.
- Confirm whether your current route allows switching to Skilled Worker from inside the UK.
- Prepare a timeline showing your visa expiry, job offer, employer request dates and UKVI delay.
- Draft a covering letter that refers to section 3.3 and explains why the CoS is unavailable.
- Take regulated advice before submitting if there is any risk of expiry, curtailment, overstaying, refusal or bail.
Need Urgent Advice Before Your Visa Expires?
Tell us your current visa type, expiry or curtailment date, employer name, sponsor licence number if available, and what UKVI delay your employer is facing. We can help you understand the risks and next steps.
Frequently Asked Questions
Can I Apply for a Skilled Worker Visa Without a CoS Number?
A Skilled Worker application normally requires a CoS reference number. However, section 3.3 of the Home Office caseworker guidance says that if the CoS reference number is not supplied, the applicant must provide an explanation. If the CoS has not been assigned because of UKVI delays, the case may exceptionally be placed on hold. This is discretionary and not guaranteed.
My Graduate Visa Is Expiring and My Employer Is Waiting for a CoS. What Should I Do?
Check your expiry date immediately, ask the employer for evidence of the pending CoS or allocation request, confirm their sponsor licence number and take advice before the visa expires. If an application is being considered without the CoS number, the explanation and evidence of UKVI delay will be important.
Can I Switch from a Student Visa to Skilled Worker While Waiting for a CoS?
Some Student visa holders can switch to Skilled Worker from inside the UK, but they must meet the Student switching rules. This usually involves course completion or the course finishing before the CoS start date. A CoS delay does not remove the Student switching requirements.
What Is a Sponsor Licence Number and Why Do I Need It?
The sponsor licence number identifies the employer as a licensed sponsor. If the CoS reference is not yet available, including the sponsor licence number can help identify the employer and support the explanation that a Skilled Worker sponsorship process is underway.
Does Section 3.3 Guarantee That UKVI Will Hold My Application?
No. Section 3.3 says a case may exceptionally be placed on hold where the missing CoS is due to UKVI delay. It does not say that every application without a CoS must be held. The explanation, evidence and wider validity requirements matter.
What Evidence Shows the Delay Is Caused by UKVI?
Useful evidence may include a sponsor licence application acknowledgement, CoS allocation request, defined CoS request, priority service request, UKVI emails, Home Office reference numbers, screenshots from the sponsorship management system or employer letters explaining the timeline.
Will I Become an Overstayer if I Apply Before My Visa Expires?
If you make a valid in-time application before your current permission expires, section 3C leave may normally continue your existing permission while the application is pending. The key word is valid. If the application is rejected as invalid, the position can become much more difficult.
Can I Apply if My Visa Has Already Been Curtailed?
If your visa has been curtailed, check the exact curtailment date. You should act before that date passes. If it has already passed, get urgent regulated immigration advice because overstaying and suitability issues may arise.
Can Someone on Immigration Bail Apply for Skilled Worker?
The Skilled Worker caseworker guidance says a person in the UK on immigration bail is not suitable for the Skilled Worker route because they do not hold permission to be in the UK. This is why acting before becoming an overstayer or being placed on bail can be critical.
Can I Work for the New Employer While Waiting for the CoS or Visa Decision?
Do not assume you can start the new role. Your right to work depends on your current conditions, whether section 3C leave applies, and whether the new employment is permitted. Starting work too early can create serious immigration and compliance problems.