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Extending a Skilled Worker visa requires a new Certificate of Sponsorship from the employer, assigned before the current permission expires — it isn't an automatic renewal, and a lapsed gap between old and new permission is a genuine right to work problem, not a formality.
Timing the extension
Start the process well before expiry — assigning a CoS, the applicant submitting their extension application, and a decision all take time. Cutting it close risks a gap where the person technically has no valid permission to work.
How long the process actually takes
There are several steps stacked end to end here, and each has its own timeline: the sponsor has to assign the CoS through the Sponsor Management System, the worker then has to submit their extension application referencing that CoS, complete any biometric enrolment, and wait for a decision. Standard and priority decision times both change from time to time, so check current GOV.UK guidance for the figure that applies right now rather than relying on what applied at the worker's original grant. Building in the full chain — not just the decision wait — is what actually prevents a gap, since a CoS assigned late makes every downstream step late as well.
Certificate of Sponsorship allocation for extensions
New hires under the Skilled Worker route generally draw on a Certificate of Sponsorship that a sponsor requests and is allocated against, sometimes subject to an annual allocation limit depending on licence type. An extension for someone already in the role and already sponsored typically doesn't compete for a fresh allocation in the same way a brand-new hire does, but sponsors shouldn't assume this without checking — the rules distinguish between a genuine continuation of existing sponsorship and what amounts to a new grant, and getting that distinction wrong at the CoS assignment stage can cause delays that ripple through the rest of the timeline.
What can change at extension
An extension is a good point to confirm the role, salary, and SOC code still match current requirements — see our guides on the salary floor and going rate rules, since both can shift between grant and extension. A worker whose salary was compliant at the original grant isn't automatically compliant at extension if the going rate for their occupation has moved up in the meantime — the check has to be run fresh, against the figures that apply now, not the ones that applied when the visa was first granted. Anyone still holding permission originally granted under the old Tier 2 (General) route and extending into Skilled Worker rules should also check our guide on the transition from Tier 2 to Skilled Worker, since the applicable requirements can differ from someone who was sponsored under Skilled Worker from the start.
Extending with a new employer isn't an extension
If the worker is moving to a different sponsor rather than staying in the same job, that isn't an extension at all, even if it happens to fall at the same point in their visa timeline — it's a fresh Skilled Worker application built on a Certificate of Sponsorship from the new employer, assessed against current salary and going rate requirements as a new grant of permission. The previous sponsor has no role in that process beyond correctly reporting the worker's departure, and the new sponsor can't simply carry over the old CoS or treat the case as a continuation. Confusing the two — assuming a change of employer can be handled through the existing sponsor's extension process — is a common and avoidable source of delay.
Dependants need their own extension
Extending the main applicant's visa doesn't automatically carry a partner or children's permission forward with it. Each dependant needs their own extension application, and while these are usually processed alongside the main applicant's, they still need to be submitted — a household where the main applicant's extension is filed on time but a dependant's is overlooked ends up with exactly the same gap-in-status problem the main timing advice is meant to avoid.
Sponsor's SMS obligations
Assigning the new CoS and recording the extension is a Sponsor Management System action with its own reporting timeline — don't leave it until the applicant's current permission is about to lapse. Setting an internal reminder well ahead of the expiry date, rather than relying on the worker or a manager to flag it, is what actually prevents this from becoming a last-minute scramble; our guide on smart alerts and reminders covers how sponsors track expiry dates across a whole workforce without depending on any one person remembering.
Common mistakes sponsors make
- Assigning the new CoS with an incorrect start date that doesn't line up cleanly with the expiry of current permission.
- Not re-checking the SOC code when the worker's actual duties have shifted since the original grant, even though the job title hasn't changed.
- Treating the extension as a formality and skipping a fresh right to work check at the point the new permission is granted.
- Missing that a change of duties significant enough to fall under a different SOC code may mean what looks like an extension is really a new sponsorship, not a continuation.
FAQ
Can an extension be for a different role than the original grant?
Only if it meets the requirements for that role as a fresh sponsorship — it isn't a simple continuation if the job has materially changed.
What happens if the extension application is still pending when the current visa expires?
An in-time application generally extends existing conditions while it's decided — but confirm this applies to the specific case rather than assuming it automatically covers every scenario.
Does an extension reset the clock toward settlement?
No — continuous residence on the Skilled Worker route toward settlement is generally tracked across the whole period held on the route, not restarted at each extension, though it's worth confirming the specific continuity requirements for the case at hand.
Does the worker need a new biometric residence document at extension?
Status is now evidenced through an eVisa rather than a physical card, so an extension updates the digital record linked to the worker's UKVI account rather than producing a new card.
Related: Skilled Worker salary floor · Skilled Worker going rates
GOV.UK references: Extend your Skilled Worker visa
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