
Rebus offer PAYE umbrella and self-employed solutions for the temporary contractor industry . We provide the highest quality of service to ensure you receive your payment for the work you undertake. We are owned by a former HMRC Tax Inspector and our staff have over 25 years experience in the industry.

A no-nonsense approach to helping Contractors and Recruiters
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.

Our dedicated team has been providing support to contractors and agencies for over 30 years. We pride ourselves on service and go above and beyond, not only because we care, because we know that payroll is important to the UK’s flexible workforce. Our priority is ensuring you are paid correctly and efficiently. We offer same day faster payments as standard.
We use our expertise to provide a leading umbrella service which is SafeRec Certified and FCSA accredited. We make sure you are up to date with legislation changes and provide the support and knowledge you need to succeed. Our compliant Umbrella service is provided with a low fixed margin enabling contractors to take home as much as possible.

NumberMill knows more than most how important payroll and related compliance is to the sector. More than ever and with the introduction of the Criminal Finance Act September 2017, it is even more important for agencies to have the reassurance that their partners meet high standards of compliance and eliminate risk in the supply chain. NumberMill truly has the qualifications, skills, and expertise to keep both contractors and agencies compliant whilst being agile, offering the best commercial, honest & transparent advice, in a constantly changing legislative environment.

Award-winning FCSA-Accredited & Professional Passport-Approved Payroll Company: Umbrella, PAYE, CIS & Limited Company.

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


Churchill Knight Umbrella was established in 2016 to provide a reliable PAYE payroll service for contractors affected by IR35 changes. Since we launched, Churchill Knight Umbrella has quickly become the umbrella company of choice for thousands of temporary workers throughout the UK.
Registering with us is easy and can be completed in under 10 minutes. And, once the registration process is complete, our dedicated customer support department is on hand to provide answers to any questions you may have. We understand how important communication is and for you to feel confident with our service.
There is more to Churchill Knight Umbrella than just payroll. You can benefit from the following at no additional cost:
*Available for clients who opt for the Churchill Knight Umbrella premium service only.

A refreshing stress free umbrella model. With designated account managers for each contractor, you can be sure to experience an efficient and hassle-free service with extremely competitive fees.