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Omnia is your professional, compliant Payroll Partner providing a range of outsourced services to help with the management, retention and well-being of your temporary contractors and permanent staff. Omnia are also FCSA accredited for both CIS and Umbrella PAYE.

With over 20 years’ experience, our focus on compliance is second to none. We’re renowned for delivering exceptional support and customer service with excellent reviews across Trustpilot and Google. We’re a leading umbrella company and provider of accountancy, tax, candidate screening and international payroll services.

Voted the UK’s Best Umbrella Company in The Contracting Awards multiple times, our award-winning umbrella company supports salary sacrifice contributions into a personal pension plan whilst passing back 100% of the employer NI saving to our contractors.

Why Core?

We put you first! We have a team of experts here to ensure you have all the support you may want or need through every process. We work hard to ensure our reputation is second to none and you can rest assured that compliance, efficiency, and professionalism are key values we uphold here at Core. We are an accredited member of Professional Passport and a tier one founding member of trade association body Prism.

Lauren Baker also sits on the executive board of Prism as their Payroll Intermediary Representative, meaning we are always ahead of the curve when it comes to legislation changes. We work with thousands of contractors in both the Public and Private Sectors and are specialists in IR35, allowing you to safely navigate this legislation and get on with what you do best, your contracting work. We would welcome a call; Matt and the team would be delighted to hear from you on 0800 211 8121. You’ll receive:

• Dedicated Relationship manager

• Set up (paperless) in as little as 24 hours with no exit fee

• Online portal for payslips and document viewing

• IR35 assessments

• Weekly, Bi-Weekly or Monthly payroll services

• Insurance cover, Professional Indemnity up to £5 million, Employers Liability up to £10 million, Public Liability up to £10 million

• Workplace pension via NOW or Salary Sacrifice

• Full statutory employment rights

Orca Pay Group is more than your typical UK umbrella company, our partnerships are built on compliance, honesty, transparency and a wealth of industry expertise. By combining cutting-edge, HMRC-approved technology with an attentive approach and modest umbrella company fees, we ensure we are the best umbrella company for contractors seeking straightforward, risk-free, and cost-effective engagements.

We pride ourselves on being a UK umbrella company that truly values its employees, for whom our rigorous processes guarantee fair tax treatment and full provision of rights, paving the way for continued, fruitful engagements.

We are immensely proud to be the first UK umbrella company to offer all of our umbrella employees full and transparent payslip audits on a payroll-by-payroll basis, ensuring that our umbrella employees can see that they have been paid correctly and compliantly every time they are paid.

This approach protects and ensures all holiday payments, pension payments and all deductions are calculated and paid to the penny. There is no better guarantee for a contractor, and why we are proud to live by our business motto, "Trust through transparency".

Ovio is the workforce partner that gets it. We support recruitment agencies, contractors and UK businesses with fully compliant payroll, workforce engagement solutions and funding, all delivered with a human touch.

Ovio was created to challenge the ordinary, to put people first, cut through complexity, and bring trust back to workforce solutions. We’re not just here to process payroll (thats the easy bit). We’re here to build something better: a company driven by values, fuelled by excellence, and united by a single rhythm.

Our platform, myOvio, is your visibility engine. We monitor contractor status, onboarding compliance, client approvals, payroll checks and supply chain health in real time. It’s everything you need to keep your staffing compliant, audit-ready, and confidence-fuelled.

Navigate People was created and is managed by a team of conscientious and dependable people who have seen a real gap in this market for genuinely excellent proactive support in delivering umbrella, PEO and CIS sub-contracting focussed on providing first class service and real added value for both workers and recruitment businesses. As workers and agencies increasingly want to know where to find the best value added benefits packages, including, for example, Personal Accident cover and fuel discounts for workers, we are constantly looking to improve our offerings for the benefit of all who work with Navigate People.

Payroll, compliance and onboarding for agencies, MSP's and end hirers, with unique financial wellbeing tools for workers.

Delivered via innovative software that fits seamlessly around your operation; brand your own user experience and configure your onboarding processes.

Our focus at Atom is ensuring we provide simple and cost-effective services to those who wish to contract or freelance in the UK and internationally.

To that end, we offer Atom Freelance and Atom International, the banners under which we offer our Umbrella Company, Construction Industry Scheme, and international payroll services.

We use up-to-date technology and have a team of highly experienced staff who ensure our clients are free to enjoy the flexibility of the contracting and freelancing lifestyle.

Please email info@atomhub.co.uk to speak to the team about our services.

Proud winners of Contractor Accountant of the Year 2024 & 2025, ICS is the only umbrella provider accredited across all four FCSA payroll standards. Trusted by thousands of contractors and rated 5 stars on Trustpilot, we combine market-leading compliance with exceptional service.

Join ICS and benefit from no margin retained in your first two weeks, same-day onboarding, daily payroll, pension and SIPP support, contractor mortgage advice, a 24/7 Wellbeing Hub, and exclusive discounts on shopping, travel, entertainment and family days out – saving you over £500 per year.

Plus, through ICS Umbrella Plus, contractors can access a BUPA Cash Plan, £100 emergency advance facility and enhanced financial wellbeing support.

✔ FCSA Accredited & SafeRec Certified ✔ Umbrella, CIS & Limited Company Solutions ✔ £50 Amazon Voucher for Successful Referrals ✔ 100% Reimbursement of Approved Expenses

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At Umbrella.co.uk, we make contracting simple, secure, and stress-free. As one of the UK’s leading and most compliant umbrella companies, we’ve supported tens of thousands of contractors for over 16 years - helping them get paid on time, stay fully compliant, and enjoy all the benefits of employment without the admin.

Our fully FCSA-accredited umbrella payroll service is built on trust, transparency, and integrity. From fast, hassle-free onboarding to accurate and timely payments, contractors consistently praise us for being “efficient, professional, and friendly,” with reviews on Trustpilot and Google reflecting our Excellent five-star rating. We don’t just meet compliance standards - we set them - working closely with SafeRec and other independent auditors to give agencies and contractors total peace of mind.

Every process at Umbrella.co.uk is underpinned by robust data protection and information security measures. We are ISO 9001 and ISO 27001 certified - the international standards for quality management and information security - demonstrating our commitment to safeguarding sensitive data and maintaining service excellence. In addition, our Cyber Essentials certification ensures our systems are protected against modern cyber threats, giving contractors and clients confidence that their personal information is always safe.

But we don’t stop at umbrella payroll. We also offer CIS payroll services for construction workers and have a Limited Company accountancy service, giving contractors the flexibility to choose the payment structure that best suits their working arrangements and goals.

For contractors looking to make the most of their income and plan for the future, we offer a salary sacrifice pension option. This allows you to contribute directly to your personal pension while benefiting from reduced tax and National Insurance contributions. We also pass on the full employment cost saving, making it an efficient and tax-smart way to build long-term financial security.

All employees also have the option to benefit from our Umbrella Rewards Pro platform - packed with valuable benefits including a BHSF healthcare plan for everyday health and wellbeing support, and a discounted fuel card, helping contractors save money on life’s essentials.

Whether it’s a contractor registering online, an agency managing multiple placements, or a client needing a trusted payroll partner, we handle everything with care, clarity, and compliance.

If you’re looking for a reliable umbrella payroll provider that puts people first, prioritises compliance, and delivers exceptional service every time - Umbrella.co.uk is the clear choice.