Straight-talking.
Your numbers, finally making sense.

Personal, plain-English accountancy for companies just starting up to growing entities up to £10m turnover. Based in Winchester — without the stuffiness.

7+Years experience
From £120Per month
ICAEWChartered Accountant
FreeFirst consultation
Chris Sullivan, Founder of Lumi Accountancy, walking with his two dachshunds
Chris
Chris Sullivan ACA Founder · Chartered Accountant
ICAEW Chartered Accountants
Why Lumi

We're not your average accountants.

Let's be honest: most people find accounting a bit of a headache. Usually that's down to dense jargon and the feeling of being "just another number" in a giant database.

At Lumi, we do things differently. You'll always deal directly with a Chartered Accountant who actually knows your business. We explain things in plain English — no buzzwords, no waffle — and we're genuinely responsive when you need us.

We handle the technicalities. You focus on running your business.

"Professional accountancy, delivered with a bit more personality."
— Chris Sullivan, Founder
💬

Plain English, always

We explain your finances in terms you actually understand — no acronym-soup, no jargon for jargon's sake.

🤝

Actually personal

You speak to a Chartered Accountant — not a call centre, not a rotating door of juniors. We know your business.

Responsive when you need it

Email support across all packages. Unlimited phone on Complete. We won't ghost you when deadlines loom.

📈

Growth, not just compliance

We don't just file your accounts and disappear. We help you understand your numbers and use them to actually grow.

Packages & Pricing

Simple, honest pricing

Every package includes a Xero subscription — our recommended software. Happy to support other platforms too. No hidden add-ons, no nasty surprises.

Need something bespoke? →
Lite
The Lite Package
Newly incorporated limited companies getting established
£120/month
Prices starting from
  • Xero subscription included (or support on your preferred software)
  • Quarterly Making Tax Digital (MTD) submissions
  • Statutory accounts submission
  • Corporation tax calculation & submission
  • Monthly bank reconciliation (up to 50 transactions)
  • Email support
Get started
Complete
The Complete Package
For established businesses up to £10m turnover ready to fully outsource their finance function
£250/month
Prices starting from
  • Everything in Core
  • Monthly management accounts
  • Quarterly / bi-annual strategy & tax review meetings
  • Unlimited phone support
Get started

Also available:

Company registration Personal tax returns VAT registration CIS returns Payroll set-up Overseas VAT Business plans Strategy meetings Due diligence
Request a quote →
What Clients Say

Don't just take our word for it

★★★★★

"Chris was brilliant. He helped me fix some messy VAT issues right at the start and has been incredibly responsive ever since. I really appreciated the useful advice on the next steps for my business. Proactive, professional, and highly recommended!"

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Google

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About
Chris Sullivan with Chip and Link, his two dachshunds

Chris with Chip & Link — the unofficial Lumi mascots.

The person behind Lumi

Hi, I'm Chris.

I started Lumi because I genuinely believe accountancy should feel less like a chore and more like having a knowledgeable mate in your corner — one who actually explains things rather than blinding you with jargon.

I've spent over 7 years in the industry, working across audit, accountancy, personal and corporate tax, and supporting businesses through acquisitions and sales. I love the variety — no two clients are the same, and I find that energising.

What I can't stand? The kind of accountant who files your return, takes their fee, and disappears until next year. That's not Lumi. We're here when you need us.

When I'm not waist-deep in spreadsheets, you'll find me walking Chip and Link (my two dachshunds), cheering on Southampton at St Mary's, or playing football — usually until I get injured!

Credentials & Accreditations
ICAEW Chartered Accountant · no. C011009337
Lumi Accountancy Limited · Company no. 17052646
Registered in England & Wales
Xero Certified Advisor
Making Tax Digital (MTD) Ready
For Start-ups

Just starting out? Perfect timing.

Getting your finances right from day one is way easier than untangling them later. We help those starting up businesses through to established entities — with experience in dealing with both situations.

1

Free consultation

Book a no-obligation 30-min call. Tell us about your idea, we'll help you figure out the right structure and what you actually need.

2

Company formation & set-up

We handle company registration, VAT, software set-up and everything needed to start trading properly from day one.

3

Ongoing compliance

Tax returns, payroll, accounts — we take care of the stuff that most founders dread, so you can focus on building.

4

Growth & strategy

As your business grows, so does our involvement. Regular reviews, financial planning, honest advice — when you need it.

Ready to make your idea official?

Whether you're incorporating for the first time or taking on your first employees, we'll make sure your finances are set up properly from day one — no nasty surprises six months in.

Book your free 30-min call →
Or drop us a message
Get in Touch

Let's have a conversation

No hard sell, no obligation. Just a chat about whether we're a good fit.

📍
Office Abbey Mill, Abbey Mill Gardens
Winchester, SO23 9LH
☎️
Phone 01962 435112
Prefer a proper chat?

Book a free 30-minute consultation. No pressure, no jargon — just an honest conversation about your business and how we can help.

Book online →

We aim to reply within 1 business day.