About us

We are Zellis, the UK & Ireland’s leading payroll and HR software and service provider.

Our history

You’ve known us previously as NGA Human Resources UK and Ireland. Today we are Zellis. Over 50 years ago Peterborough Data Processing Limited was founded and grew quickly, changing names a few times along the way.

As Northgate in 2007 Arinso was acquired and became NorthgateArinso. This in time simplified to NGA Human Resources.

In February 2018 the UK & Ireland division was sold to operate as a standalone company – That’s us, Zellis.

We continue to partner with our former parent company to serve the needs of global customers in the UK and Ireland.

A lot has changed in 50 years, we’ve been leaders through it all and we’re ready for what’s next.

Our vision

Now, we're in direct control of our business. It’s an exciting time for us and our customers too.

We have supportive shareholders committed to developing the business for the long term. We will be making significant investments to further enhance our technology and services, with exciting developments in areas like robotics and AI.

Our focus will be on delivering successful partnerships with customers. We want to work closely with you to help you achieve better employee experiences and deliver successful business outcomes.

Zellis might be a new name, but we are a strong and long-established company and we aim to remain at the forefront of our industry.

Our expert team

John Petter

John Petter

Chief Executive Officer

As the former CEO of BT’s Consumer division, John helped to transform customer experience at the business. His wealth of knowledge is now a key driving force at Zellis.

Marko Perisic

Marko Perisic

Chief Technology and Product Officer

Marko joined Zellis from Microsoft where he was General Manager. He’s also held leadership positions at multiple start-ups and brings exceptional experience to the team.

Caroline Drake

Caroline Drake

Chief People Officer

Joining from Worldpay, where she held the role of Group Development and HR Director, Caroline’s insights make her an invaluable member of the Zellis team.

Abigail Vaughan

Abigail Vaughan

Chief Operating Officer

Abigail joins from BT and Accenture, where she held numerous leadership roles in Transformation and large scale operations, focussed on customer experience, investment in people and upgrading systems and capabilities. Her continuous improvement mindset will ensure Zellis meets rising expectations.

Tom Canning

Tom Canning

Chief Commercial Officer

Tom joined us from Flexera, a global software and cloud management company, where he was responsible for all aspects of their business in Europe, Middle East and Africa. Tom brings a vast amount of experience in B2B software sales, marketing, customer success and strategy to Zellis.

Alan Kinch

Alan Kinch

Chief Financial Officer

Joining from the Global Enterprise Division of Vodafone Alan brings global, multi-industry expertise to lead all aspects of financial and commercial management at Zellis.

George Dunnett

George Dunnett

Chief Transformation & Strategy Officer

George joined from Bain & Company where he led global transformation, strategy and digital programmes as well as M&A across multiple sectors. George’s experience and expertise will help accelerate and fully realise Zellis’ own transformation journey.

Elizabeth Leppard

Elizabeth Leppard

General Counsel and Company Secretary

Elizabeth uses her wealth of experience in advising the public and private sector on complex projects, transactions, employment, data protection and compliance issues; alongside over 10 years advising the Zellis executive leadership team to lead Zellis group legal and compliance functions.

Marc Powell

Marc Powell

VP Consultancy Services

Thanks to years of experience in managing complex projects for businesses, Marc is able to support and guide Zellis’ customers through periods of change.

processed payments per month
payslips every year (based on monthly payrolls)
of the top 10 banks work with us

Where the magic happens

Our 2,000 colleagues are based in offices across the UK, Ireland and India.


Hemel Hempstead - UK HQ

Peoplebuilding 2 - Peoplebuilding Estate
Maylands Avenue
Hemel Hempstead


2nd Floor, Howard House
40-64 St John's Street
MK42 0DJ


One Parklands
Parklands Business Park
B45 9PZ


740 Waterside Drive
Aztec West
BS32 4UF


8th Floor, G Mill
Dean Clough Mills
West Yorkshire


Euston House
24 Eversholt Street


Thorpe Park
239 Thorpe Road


The Quadrant
Suite 28, 99 Parkway Avenue
S9 4WG

Dublin - Ireland HQ

3rd Floor
1 Custom House Plaza
Dublin 1


NSC Campus - Suite 108


Carnival Infopark
Phase IV - 4th floor
Kochi – 682042

Want to learn more?

If you’d like to discover more about ResourceLink or how our people can help you transform your payroll and HR operations, we’d love to talk.

Talk to us

Related Zellis businesses:

Looking for award-winning employee benefits? Technology and services that recognise and reward your employees? Speak with the team at Benefex. If you're a small or growing business with payroll and HR requirements, Moorepay can help you get ahead.