22 Years Inside Retail Payroll

Built on real-world experience across complex, multi-site retail operations — not theory.

B
QualificationCIPP Qualified
Experience22+ Years
SpecialityRetail & Multi-Site

William (Billy) Hayes

The most expensive payroll audit is the one you didn't do.
Reduced payroll error rates from inside to independent within 90 days in a major retail environment

Billy spent over two decades inside the payroll functions of some of the UK's most demanding retail businesses — not as a consultant looking in, but as the person responsible for getting it right. He knows where the problems hide because he's inherited them. That inside knowledge is what Global Payroll Doctors brings to every client engagement.

He has led retail payroll operations across major brands including Charlotte Tilbury, Calvin Klein, Tommy Hilfiger, Rituals Cosmetics, Fortnum & Mason, Sweaty Betty, and Stitch Fix — with over a decade managing international payroll operations across the UK, Ireland, Netherlands, Germany, Spain, France, and APAC.

Global Payroll Doctors was built to bring that experience to retail businesses before issues escalate into financial or regulatory problems.

Retail payroll doesn't fail because of one mistake — it fails because of how everything fits together.

Experience Across Leading UK Retail & Consumer Brands

Charlotte Tilbury
Calvin Klein
Tommy Hilfiger
Rituals
Fortnum & Mason
Sweaty Betty
Stitch Fix
Martindale Pharma

Experience gained through prior in-house roles.

Why Retail Businesses Use Us

🎯

Built for Retail Complexity

Built specifically for retail payroll complexity — shift patterns, irregular workers, seasonal staff, high turnover, and multi-site operations.

🔍

Fully Independent

No conflict of interest. We're not your payroll provider or software vendor. Our job is to find the problems — independently.

📄

Clear, Actionable Outputs

Not theoretical reports. Specific findings with risk ratings, legislative references, and clear recommended actions your team can act on.

⚠️

Focused on Risk

We don't process payroll. We identify where your retail payroll is exposed — and quantify what that estimated exposure means in practice.

💷

Financial Impact First

We don't just flag issues — we quantify them. Estimated exposure in pounds, so you can make an informed decision about remediation.

Trusted by Leaders
at Every Level

From CEOs to HR Managers — here is what the people we have worked alongside have to say.

You made a very significant impact indeed.

Chris Peel
CEO — Opus Talent Solutions
CEO
Endorsed

Your professionalism and can-do approach to everything was much appreciated and respected.

Siva Shankar
CFO — RST C&A

Head and shoulders above the rest — you created a great service and function. Great work.

Nigel Ramana
COO — Opus Talent Solutions

I'm so grateful for your calm and steadiness as we wound down SF UK.

Natasja Giezen-Smith
CEO/COO — Stitch Fix UK

Your ethic, values, speed, knowledge — it's inspirational. You made a huge impression and we miss you already.

Sasha O'Donovan
Head of Talent Solutions — Opus

I loved working with you Billy — you are so great at what you do and always so helpful.

Martina Talbot
HR Manager — Opus Talent Solutions

Absolutely loved working with you at Stitch Fix — great times, hopefully we cross paths again in the future.

Abbie Barker
HR Business Partner — Stitch Fix

The man with more HMRC patience than anyone else I've ever met. It's been an absolute joy to collaborate with you. No matter how frustrating the situation, you can always find a smile, which lifts everyone around you.

Dawn Ford
International Head of Legal Risk & Compliance

Know Where You Stand

A focused call to understand your retail payroll setup and whether there's risk worth addressing.

Book a Call

Or email us: clientservices@globalpayrolldoctors.com