Strategic Finance Director for Founders & Leadership Teams

Based in Oxford | Supporting London & UK businesses

Turn Financial Stress Into Strategic Confidence

I work with founders and leadership teams who want more clarity and less chaos, bringing structure, insight, and financial calm as they scale. Explore my strategic finance packages.

Not sure where to start?
You can take a short assessment for tailored guidance, or book a free introductory call to talk things through at your pace.

No email required. Instant results.
No email required. Instant results.
Choose a time that works for you. No forms, no preparation, just a conversation.

Space to think clearly.
With over 20 years of senior finance leadership across the UK, Ireland and Australia, I am now based in Oxford, advising founders and leadership teams in London and across the UK. I bring commercial clarity, financial structure, and disciplined growth planning to support confident, well-grounded decision-making.
As the founder of O’Neill Insight Partner and a CIMA Practising Certificate Holder, I provide trusted mortgage and financial verification certificates, giving business owners peace of mind when clarity and credibility matter most.
My mission is simple: to give business owners calm, clarity, and confidence around their finances so decisions feel clear, grounded, and manageable.
Meet Carmel O'Neill
ACMA, CGMA, MiP

A financial partner who cares about your business as much as you do.

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Testimonials

What leadership teams say about working with Carmel

With over 20 years of senior finance experience, I’ve worked alongside executive and commercial teams across marketing, digital, retail, and operations, supporting confident, commercially grounded decisions. Here’s what they’ve shared about working together.

An extraordinary financial professional

I had the pleasure of working with Carmel for over 10 years in my role as Chief Marketing Officer and then European Chief Marketing Officer at Westfield. Carmel was an extraordinary financial professional who was a key member of the Marketing leadership team. Her ability to manage a vast array of projects across operational shopping centres and development sites was second to none. She was not only a key partner to me but also to the other senior management within the business. It is fair to say that Carmel has been the most talented financial professional I have worked with in my career, and I would highly recommend her to any business.

Myf Bagnold — Global Chief Marketing Officer

She made complex financial strategy easy to understand

I had the complete joy of working with Carmel at Westfield Shopping Centres UK, where I was Head of Digital and Carmel was (fortunately) the Marketing Accountant for the entire Marketing and Digital function. Always calm, composed, reliable and very professional, Carmel was able to ingest a wide variety of information and make sense of the strategy. She taught me a great deal about P&Ls and financial planning and  I still use what she taught me in my role today.
I have a huge amount of respect for Carmel's intelligence, resilience, and problem-solving abilities. She combines these strengths with dedication to her role and a desire to genuinely support her colleagues.
Sarah Lukins — GM Digital, Fisher & Paykel Appliances

Supreme dedication and professionalism

I worked with Carmel for over 10 years at Westfield, during a period of significant growth and change. Carmel supported our team throughout with supreme dedication and professionalism. Thoroughly organised, with flawless attention to detail, she had the patience and confidence to deal with the most challenging stakeholders. She always provided great insight beyond her role, gave both me and the wider team huge support, and was a joy to work with.

Chris Lynham — Director of Media, Westfield Rise

An amazing business partner for our marketing division

Carmel was an amazing business partner for our marketing division for over 14 years. Throughout the years she demonstrated exceptional expertise in financial management, strategic planning, and business partnering. Her attention to detail and unique talent for building strong relationships made her invaluable.
Carmel is proactive and forward-thinking with an ability to find the balance for marketing whilst understanding the wider business strategy. She was brilliant to work with and a real asset to Westfield.
Harita Shah — Marketing Director (CIM) Retail, Placemaking & Mixed-Use Developments

Chartered Institute of Management Accountants – Practising Certificate Holder
Carmel O'Neill
Founder & Strategic Finance Director
O’Neill Insight Partner
Oxford, United Kingdom
Supporting London & UK businesses
Contact:carmel@oneillinsightpartner.com
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