Rogue employers face up to £60,000 fine as HMRC intensifies migrant worker crackdown
14 July 2025
Businesses employing illegal migrant workers face fines of up to £60,000 per illegal worker under HMRC’s intensified clampdown on large scale abuse of the UK’s immigration legal system, with reports of increased numbers of unannounced compliance visits by UK Visas and Immigration (UKVI) investigators.
UKVI is growing increasingly tough on illegal working and clamping down on “rogue” employers, whilst seemingly caving in to mounting pressure to reduce legal migration, which, according to reports, is behind the dramatic increase in the number of sponsor license suspensions and revocations.
“In recent weeks, there have been multiple reports that confirm that UKVI has increased compliance visits of sponsorship licence holders as part of a broader government effort to intensify a crackdown on businesses holding sponsor licenses and those employing migrant workers, to monitor whether the licence holders are genuine and complying with their duties,” André Minnaar (pictured), Partner and Head of the Immigration Team at Midlands law firm Sydney Mitchell, says. “This has led to a dramatic increase in the number of sponsor license suspensions and revocations, coinciding with a noticeable increase in enforcement visits targeting illegal working.

“If found to be employing any illegal workers, businesses face huge fines of £45,000 per illegal worker for a first offence and £60,000 per illegal worker for a repeat offence in a three year period.”
According to the most recent Home Office data, in the first half of 2024, 833 Skilled Worker sponsors had their licence suspended and 709 Skilled Worker sponsors had their licence revoked. This is a dramatic increase compared to the previous year when 569 Skilled Worker sponsor licences were suspended and 337 were revoked.
The care home industry is one of the UK’s largest employers of migrant workers and holders of Skilled Worker sponsor licences: “The trend began in 2024 after UKVI uncovered large scale abuse of the skilled visa system by care home agencies who was sponsoring health care workers,” André comments. “This led to an unprecedented number of sponsor licence suspensions and revocations, leaving many health care works who came to the UK to work, without jobs.”
André explains that any compliance visit by UKVI , whether unannounced or pre-arranged, will involve UKVI officials carrying out checks with the main aim of establishing whether the licence holder is complying with their duties. After a visit, UKVI can continue to monitor compliance.
“It is vital to ensure that you as a licence holder are ready at all times for such a visit, to demonstrate that the business can or continue to be able to meet your sponsor duties,” André says. “The consequences of failing a Home Office inspection can be severe. The business may be downgraded from an A rated licence to a B rating, and the licence holder will be given an action plan to comply with within a fixed time frame. The licence holder will have to pay a fee and will not be allowed to sponsor any new workers until complaint with the action plan and the A-rating is restored
“Other measures available to UKVI inspectors are suspending the licence altogether, meaning that the business is unable to have a Certificate of Sponsorship assigned during the suspension period, although current sponsored workers will not normally be affected. UKVI can also choose to revoke a sponsor licence, which for the licence-holding business means it will be unable to sponsor any more workers and any existing sponsored workers’ permission will normally be curtailed.”
A licence holder must be prepared for a spot-check visit, says André, and to be ready, owners must ensure all systems and procedures are in place and up to date, including human resource and recruitment systems that must be in line with sponsor duties set out by UKVI.
André Minnaar is recognised as the only Leading Partner in his area of expertise by the Legal 500 publication Best Lawyers ranking for individual areas of expertise. He has extensive experience in immigration law, including and not exclusively in getting UKVI visa refusals overturned, complex long residence applications, de facto adoption applications and appeals, asylum claims and entry clearance. His commitment to achieving successful outcomes for his clients has earned him a reputation as a trusted advisor in the field, helping individuals and businesses.
Founded over 260 years ago and with offices in Solihull and Birmingham, Sydney Mitchell LLP’s specialist team portfolio covers employment, commercial property, company and commercial services, shareholder disputes, contract law, litigation, personal injury, insolvency, residential property, dispute resolution, immigration, wills and probate, tax and trusts, personal injury, as well as family and child law. Visit: www.sydneymitchell.co.uk.