Business Immigration Solicitors for Employers

Specialist business immigration solicitors in London and the South East – helping employers bring international talent into the UK with confidence.

Expert guidance for employers hiring overseas talent into the UK.

Hiring talent from overseas is essential for growth in many sectors – but, it’s easy to fall foul of complex and ever-changing UK immigration rules. Mistakes in international recruitment can lead to refused applications, sponsor licence suspension or revocation, reputational damage and even criminal or civil penalties. That´s where business immigration solicitors come in.

Common mistakes include:

  • Incomplete or outdated right to work checks.
  • Incorrect job classifications or salaries.
  • Failure to keep the Sponsor Management System up to date.
  • Poor record-keeping and file management.
  • Unfamiliarity with visa conditions and expiry timelines.

We believe businesses shouldn’t lose out on great talent just because immigration law is complex. At Thomas Mansfield, we help you avoid these pitfalls from the outset – and respond quickly and commercially if problems arise.

A joined-up approach to recruitment and immigration

Business immigration doesn’t exist in isolation. Many of our clients come to us for integrated advice covering both immigration and recruitment – from defining the role and determining employment status to making compliant job offers and onboarding international staff.

Our business immigration solicitors guide you through every step – from sponsor licence applications to visa renewals and Home Office compliance and workforce planning – so you can focus on growing your team, not navigating red tape.

We provide clear, commercial advice to help you stay on the right side of the law – helping you get the talent you need, when you need it.

Call our employment law team on 020 4579 5997 or

Meet our employment law partners

Practical legal advice for UK employers managing international recruitment.

Whether you’re recruiting from abroad for the first time or managing a well-established sponsorship programme, we’ll tailor our advice to your workforce needs and commercial objectives.

We act for businesses across a range of sectors – including financial services, professional services, technology, healthcare, transport & logistics and hospitality – supporting employers to hire and retain overseas workers lawfully and efficiently.

Our support includes:

  • Sponsorship licence applications – Our business immigration solicitors advise and support to secure a sponsor licence, including guidance on eligibility, documentation and internal compliance systems.
  • Skilled Worker visa applications and renewals – End-to-end assistance with new applications, extensions and transitioning staff into compliant visa routes.
  • Global Business Mobility visas – Support with senior or specialist worker routes for temporary assignments, secondments or intra-company transfers.
  • Right to work checks and illegal working prevention – Practical advice on carrying out compliant checks and protecting your business from penalties or enforcement action.
  • Sponsor Management System (SMS) support – Guidance on using the Home Office portal to assign sponsorship, report changes and maintain compliance.
  • Ongoing compliance and record-keeping – Help maintaining accurate records, meeting your sponsor duties and preparing for Home Office audits.
  • Restructures, TUPE and business changes – Advice on how changes in your business affect your sponsorship obligations and sponsored workers.
  • Training for HR and compliance teams – Tailored training on immigration processes, duties and risk areas to ensure internal teams stay confident and compliant.

Why employers choose Thomas Mansfield Solicitors.

  • Specialist immigration advice for employers – Our business immigration solicitors help UK businesses navigate sponsor licensing, visa processes and compliance with confidence.
  • Recognised and accredited – Ranked in The Legal 500, Lexcel accredited and members of the Employment Lawyers Association.
  • Sector experience where it matters – We advise employers in sectors where global recruitment is key, including healthcare, logistics, financial services, technology, hospitality.
  • Commercial and responsive – You get practical, timely advice that fits your hiring needs and keeps recruitment on track.
  • Trusted by UK and international businesses – Our clients range from scaling service providers to global institutions with UK operations.
  • Straightforward to work with – Offices in London City and the South East. Clear advice, no jargon and a team that understands business priorities.
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Immigration support that works for your business

We take a joined-up, commercial approach to business immigration – helping employers bring in global talent efficiently, lawfully and with minimal disruption.

  • Start the conversation – We begin with an initial call to understand your business, your recruitment goals and any compliance challenges.
  • Get a clear plan – You’ll receive practical recommendations, transparent fees and expert support tailored to your workforce needs.
  • Move forward with confidence – From one-off visa applications to long-term immigration strategies, our advice is designed to support your growth.

Speak to our business immigration solicitors to help bring the right people into your business.

Call our employment law team on 020 4579 5997 or

Contact us

Contacting the right person couldn’t be easier. Use our form or call us to speak to an experienced employment solicitor in confidence.

Please note we do not offer legal aid or no win no fee agreements.

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