
Award winning, forward thinking payroll provider, putting workers first at all times

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.

Over 30+ years of UK contractor and agency expertise with a strong compliance heritage as founding members of FCSA holding certifications for all 3 services (umbrella, PSC and CIS). Brookson offers comprehensive solutions, personal service, and expert guidance through every industry challenge. We offer regulated financial services, accountancy services, outsourced payroll, back office and legal services underpinned by technology to support your business and contractors. Brookson is your business partner, not just another umbrella company.

Oasis, with its wealth of knowledge and expertise in both accountancy and umbrella, offer contractors and recruitment partners a hassle-free and compliant approach to getting paid, whilst always delivering a quality service. To demonstrate our commitment to compliance we are accredited by both FCSA and Professional Passport and are affiliate members of ACCA. Our long-term agency relationships have been built on trust, unparalleled service, and proactive support. Our bespoke services, tailored to your specific requirements and in a world of ever-changing legislation, we aim to provide you with the most up to date guidance and advice. Passionate and committed to driving up standards, Oasis keeps the supply chain risk free by paying all taxes and associated payments on time.

Built for a new era of Umbrella payroll, where compliance, transparency and trust comes first.
Backed by the Marquee Group and SafeRec accredited, Arkon Pay delivers a fully compliant PAYE solution designed for today's contractor market.
Combining industry expertise with a technology led approach, we provide a reliable, straightforward service to both agencies and contractors. From onboarding through to ongoing support, out focus is on consistency, clarity and doing things properly.
Arkon Pay is more than just an umbrella provider, we are a trusted partner in an increasingly regulated market.

MMC is a SafeRec Accredited commercial contractor offering contracting services to the temporary labour market.

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

Putting Contractors First, Every Step of the Way
With over 20 years of experience supporting contractors and freelancers, SmartWork combines the reassurance of full compliance with the personal service you’d expect from a team that genuinely cares about your success.
Compliance You Can Trust
We’ve held FCSA accreditation for 10 years and have been an APSCo Trusted Partner for over 20 years – certifications that are rigorously audited annually to protect contractors and give recruitment agencies complete confidence.
Our ISO 27001 certification protects your data security, while our SafeRec certification helps recruitment partners minimise compliance risk across the supply chain.
A Service Loved by Contractors
Our commitment to supporting contractors is reflected in our outstanding Google and Trustpilot reviews. When you work with SmartWork, you’re not just a number; you get a dedicated account manager and a team that’s there to help every step of the way.
What We Offer:
For Contractors:
Get paid faster – Same-day payments at no extra cost
Stay in control – Secure online portal for payslips, timesheets, and documents
No hidden costs – Transparent pricing with no setup or exit fees
Fully protected – Comprehensive insurance including Public & Employers’ Liability, Professional Indemnity, and Medical Malpractice
Proper employment – Full contract of employment with all statutory benefits
Life perks – Referral reward, private pension support, and access to contractor- specialist mortgages Quick to start – Set up in as little as 15 minutes, online or by phone
For Recruitment Partners:
Real-time payroll verification – SafeRec certification for live compliance checking
Dedicated agency support managers – Your direct line to our team
Advance payment facilities – Available for preferred partners
Trusted track record – Featured on over 100 Preferred Supplier Lists
Seamless contractor experience – Making your candidates’ journey smooth and compliant
Click on one of the links to the left to contact us; we’d love to hear from you.
Pay Guardians operate a simple and efficient umbrella and PEO service for agencies and workers. Our processes are fully documented and comply wholly with employment and tax legislation leaving you free from the burden of ensuring yours and your temporary workers affairs are fully managed. Our team of qualified accountants and payroll specialists with years of experience will ensure piece of mind and provide the highest quality of personal service throughout.

Compass is leading the way in umbrella employment. Whether you are new to contracting or have been one for some time, Compass has the experience and range of solutions to ensure you are provided with the solution that works best for you. We are committed to providing you with hassle free payment solutions, excellent customer care, market leading technology and reliable compliance based on expert knowledge and industry experience.