Accountancy without
the Accountant-speak.
We take the financial burden off business owners and give you real insight into how your business is actually performing. Straightforward accountancy for companies from start-up to £10m turnover, right across Hampshire.

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 clearly, skip the buzzwords and the waffle, and we're genuinely responsive when you need us.
We take the financial burden off your plate entirely, handling the compliance, tax and reporting so you can focus on running your business. Filing your numbers is only half of it, though: we make sure you understand them too. You'll always know how the business is performing, what's coming next, and what to do about it.
"Professional accountancy, delivered with a bit more personality."
We explain your finances in terms you'll actually understand, with no acronym-soup or jargon for jargon's sake.
You speak directly to a qualified Chartered Accountant who takes the time to know your business properly, and stays with you throughout.
Email support across all packages. Unlimited phone on Complete. We won't ghost you when deadlines loom.
We lift the financial burden off your shoulders completely, so no more chasing deadlines or lying awake over compliance. In return you get clear, regular insight into how the business is doing and what the numbers mean for where you're heading.
Every package includes a Xero subscription, the software we recommend, though we're happy to support other platforms too. There are no hidden add-ons and nothing nasty buried in the small print.
Explore a specific service in detail:
Specialist support for your sector:
"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!"
"Lumi Accountancy has been great. I started my business recently. I spoke with half a dozen different accountants after my wife's bad experience with an accountant caused considerable issues. Lumi were the only accountancy that consistently provided me with timely responses to enquiries and questions enabling me to make effective business decisions quickly. They make completing accounts simple from an owner's perspective who needs to focus on running and growing the business."
Chris with Chip & Link — the unofficial Lumi mascots.
I started Lumi because I genuinely believe accountancy should feel less like a chore and more like having someone in your corner who you can ask questions without judgement, with no topics off limits.
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 genuinely 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!
Getting your finances right from day one is way easier than untangling them later. We help everyone from brand-new start-ups to established companies, with the experience to support you at every stage.
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.
We handle company registration, VAT, software set-up and everything needed to start trading properly from day one.
Tax returns, payroll, accounts. We take care of the stuff most founders dread, so you can focus on building.
As your business grows, so does our involvement: regular reviews, financial planning, and honest advice when you need it.
Incorporating for the first time, or taking on your first employees? We'll make sure your finances are set up properly from day one, with no expensive shocks six months down the line. Just set up your company? Our new company guide walks you through the first steps.
Book your free 30-min call →Based at Abbey Mill in Winchester, we work with businesses right across Hampshire, both in person and online via Xero. Find your area:
Straight answers to what Hampshire business owners ask us most. For more, see the full FAQs.
There's no legal requirement to use an accountant, but every UK limited company must file statutory accounts and a corporation tax return that follow strict accounting standards. A Chartered Accountant keeps you compliant, claims the allowances and reliefs you're entitled to, and takes the deadline risk off your plate.
Every Lumi package includes a Xero subscription, your year-end statutory accounts, corporation tax return, director's payroll and ongoing support. Core (from £180/month) adds VAT returns and team payroll; Complete (from £250/month) adds full bookkeeping, monthly management accounts and unlimited phone support. Packages start from £120/month.
| Included | Lite · £120/mo | Core · £180/mo | Complete · £250/mo |
|---|---|---|---|
| Xero subscription | Included | Advanced | Advanced |
| Statutory accounts & corporation tax | Yes | Yes | Yes |
| Director's payroll | Yes (1) | Yes | Yes |
| Monthly bank reconciliation | Up to 50 | Up to 150 | Unlimited |
| Quarterly VAT returns | — | Yes | Yes |
| Team payroll | — | Up to 5 | Up to 5 |
| Full bookkeeping | — | — | Yes |
| Monthly management accounts | — | — | Yes |
| Strategy & tax review meetings | — | — | Quarterly / bi-annual |
| Support | Unlimited phone |
ICAEW Chartered Accountants are qualified members of the Institute of Chartered Accountants in England and Wales, held to its technical and ethical standards and to ongoing professional training. At Lumi you always deal directly with Chris Sullivan ACA, an ICAEW Chartered Accountant (member no. C011009337), not an unqualified bookkeeper.
Ideally from day one. Getting your structure, software and tax registrations right at the start is far easier than untangling them later, and it means you never miss a filing deadline or a claimable cost in your first year. We support businesses from incorporation through to £10m turnover.
Yes. You work directly with a qualified Chartered Accountant who gets to know your business and stays with you, rather than being passed around a call centre or handed to junior staff. It's the personal service most growing businesses tell us they were missing.
No hard sell, no obligation. Just a chat about whether we're a good fit.
Book a free 30-minute consultation. There's no pressure and no jargon, just an honest conversation about your business and where we can help.
Book online →