
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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Big Fish Group Limited is a leading UK provider of umbrella PAYE and CIS payroll services, dedicated to serving contractors and recruitment agencies with unwavering reliability. We challenge the traditional stereotype of the sector by combining rigorous professional standards with a genuine passion for what we do. Founded on the principles of authenticity and dedication, we understand that credibility and compliance are the cornerstones of the recruitment industry. For agency partners, from boutique firms to multi-national MSPs, we offer a transparent, "straight-talking" partnership that prioritises your reputation and the welfare of your workforce. While we operate with energy and a personable approach, we never compromise on quality. We are committed to delivering the precise services our partners need, ensuring contractors are paid correctly and on time, every time. Commitment to Compliance
In an industry where regulatory adherence is paramount, Big Fish Group stands as a beacon of trust. We are proud to be FCSA-accredited and SafeRec-certified, ensuring our processes are independently audited and fully compliant with UK tax law and associated legislation. Our accreditations are complemented by our cloud-based payroll compliance portal, Lighthouse. Lighthouse provides our recruitment agency partners and end clients with direct access to and insight into every stage of our payroll process, as well as real-time visibility into our PAYE liability information. Our clients are never left wondering and can rest assured that their supply chain is secure, compliant, and meets the highest standards of integrity.
Big Fish: Not Your Average Umbrella
• Experienced Leadership: Founded and led by a team with over 30 years of combined experience in the payroll and recruitment sector.
• Unrivalled Availability: We understand the demands of the recruitment cycle. We provide exceptional customer service and support that extends beyond the 9-to-5. When we say 24/7, we mean it.
• Comprehensive Service Range: Expert provision of Umbrella PAYE and CIS payroll services tailored to the needs of the modern workforce.
• Reliability & Accuracy: A steadfast commitment to ensuring accurate, on-time payments for contractors, safeguarding agency relationships.
• Client-Centric Culture: A friendly, energetic team that prioritises the things that matter most to our customers, delivering solutions with a personal touch.


StoneBridge Pay (SB Pay) is a leading UK umbrella payroll provider, delivering compliant, efficient payroll services since 2017. Working closely with our partnered agencies, we ensure contractors get paid accurately and on time, with compliance and exceptional service at the heart of everything we do.
We specialise in PAYE umbrella, CIS and PEO payroll services, supporting agencies across key sectors including telecommunications, rail, construction, driving and logistics, medical, education and IT.
Our in-house Compliance Department and continuously evolving service help protect the supply chain, ensure smooth processes, maintain timely payments, and keep all operations aligned with UK legislation.
Agency partners benefit from a wide range of added-value services, including payment options via Corporate AMEX and Capital on Tap Visa, comprehensive insurance, access to our industry-leading portal, flexible credit terms, and more.
Workers engaged through SB Pay also enjoy valuable extras, including 24/7 GP support, insurance, and complimentary guidance from specialist contractor financial advisers.
To find out more about SB Pay and our payroll services, call 020 4591 2677 or email info@sbpay.co.uk.

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.

Since 2005, AZebra Group have delivered expert payroll solutions to contractors and businesses across multiple sectors. Our specialist services cover Umbrella, PEO - fully outsourced employment and CIS payroll models, designed to meet the needs of both contractors and agencies.
We take care of everything, from payroll to statutory compliance, so you don’t have to worry about administration. Our dedicated team provides clear communication and reliable support, making it easy to work with us.
AZebra Group is proudly accredited by the FCSA and SafeRec, demonstrating our commitment to the highest standards of compliance and ethical practice. We also partner with Brabners and Markel Tax, offering expert guidance on complex payroll and employment matters, giving agencies and contractors confidence and peace of mind.
We also invest in your agency and your contractors with exclusive benefits, including 750+ CPD courses, wellbeing & fitness resources and an interactive performance hub - all completely free!

We are a Payroll Company with a difference. We care and are here to help make sure your pay is correct. We have the knowledge and experience to get it right and ensure everything is being dealt with correctly.

With 26 years of payroll expertise, Sterling Solutions delivers compliant, efficient, and contractor-friendly service.
Why Contractors Choose Sterling • Pension Flexibility – Pay into a pension of your choice, not just the workplace scheme. • Fast, Easy Onboarding – Includes tailored payslip illustrations. • Expense Claims – Mileage reimbursement available (subject to assessment). • Comprehensive Insurance Cover – Personal Accident, Employers & Public Liability. • Optional Professional Indemnity Insurance • Holiday Pay – Paid upfront. • Sterling App – Manage your employment and payments on the go. • UKMC Mortgage Advice – Free, expert guidance. • VeriPAYE Audited Payslips – Every payment checked for accuracy. • Sterling Rewards – Discounts on shopping, travel, entertainment & more. • Medicash Health Plans – Support for everyday healthcare costs.

I4 have been in operation since 2005 and have partnered with over 10,000 businesses and paid over 35,000 contractors. Our services offer temporary workers and freelancers an opportunity to retain the correct amount of their hard-earned cash, without any of the overheads or risks of running their own companies or falling foul of IR35 legislation. i4 will look after the calculation, deduction and payment of all statutory payments for you. Get organised on the go with innovative and convenient solutions that free up your time to focus on doing what you do best. We have recently partnered up with ANDREW NOLAN MORTGAGES LTD to help contractors secure mortgages as it can prove difficult.

Here at Danbro, we’re passionate about people; putting contractors like you at the heart of what we do. Having started life as a small, family-run firm with a handful of clients, we now provide specialist financial, payroll, accounting and employment to thousands of contractors and self-employed people across the UK. Danbro is a name you can trust, as our reviews and accreditations attest. Our umbrella employment solution is designed with you in mind. We’ll do everything we can to reduce your administrative burden and make sure you have the support you need for your contracting career. Our experienced team pay thousands of contractors every single week, so you can rest assured you’ll get paid in full and on time, every time. Join today and combine all the benefits of permanent employment with the freedom of running your own business.
You'll receive:
Likewise, our contractor accountancy plans include access to award-winning software, as well as:
Our fees are fixed and, what’s more, you’ll also be assigned your very own Personal Accountant because, to us, accountancy is about more than just number crunching. It’s about developing great relationships, overcoming obstacles, providing tangible solutions, and enabling people to achieve their potential.