Mida OS — back office & compliance stack for early-stage UK founders
A fully managed back office and compliance stack for early-stage founders in the UK.
Starting a company in the UK is fragmented and slow.
Founders are forced to do the work of a lawyer, accountant and HR manager — before they’ve shipped a product.
- 01Incorporate correctly
- 02Navigate EIS / SEIS
- 03Bookkeeping & monthly accounting
- 04Annual accounts & filings
- 05Confirmation statements
- 06Coordinate lawyers and accountants
- 07Hiring and payroll
- 08Investor docs that survive due diligence
Confusing. Easy to get wrong. And it pulls founders away from building.
The cost isn’t money. It’s compounding mistakes.
Missed deadlines
Penalties and bad signals to investors.
Broken cap tables
Bad EIS setup unwinds in due diligence.
Messy financials
Investor friction. Lower valuations.
Hiring & payroll errors
Misclassification and tax exposure.
Coordination tax
Hours each week chasing providers.
Compounding drag
Every small mistake costs more over time.
Three painful paths. No good answer.
DIY
Cheap upfront. Huge spend on SeedLegals with no human input. Manage your own cap table, payroll and hiring. High risk of errors.
Hire a finance / ops person
£2k–£4k per month. Still need external lawyers and accountants. Still coordinating payroll. Hard to hire early.
Fragmented providers
Fractional lawyer, fractional accountant, bookkeeper, payroll provider — and a founder running it all as project manager.
→ No single owner. No system.
Startups don’t need more tools or providers.
They need a system that just runs their back office.
Mida OS. End-to-end. Done-for-you.
One managed stack — handled proactively, by experts, orchestrated as a single product.
- —Incorporation
- —EIS / SEIS
- —Statutory filings
- —Confirmation statements
- —Bookkeeping
- —Annual accounts
- —Fundraising documents
- —Shareholder agreements
- —Employee contracts
- —UK & international payroll
What used to require a team
now runs as a product.
AI-native infrastructure
Repetitive compliance workflows automated end-to-end.
Coordinated by design
Legal, accounting and payroll orchestrated seamlessly.
Cost without compromise
Lower price, higher quality. Both, not either.
Founders stop thinking about compliance.
- —Everything handled, proactively
- —Clean, investor-ready financials
- —No missed deadlines
- —Smooth hiring & payroll
- —One point of contact
- —Zero coordination overhead
One price.
Everything included.
No hourly billing. No surprise invoices. No coordination tax.
- Legal coordination
- Accounting & bookkeeping
- Compliance & filings
- SEIS / EIS filing & compliance
- Payroll (UK + international)
- Fundraising documents & shareholder agreements
- Employee contracts
- Ongoing support
Notes
- — Fundraising documents from seed stage onwards, or nuanced institutional raises, are billed separately by our partner law firm.
- — £350 excludes VAT-registered startups; quarterly VAT filings carry a small additional monthly fee paid directly to accountants.
Lower cost. Less complexity. Less risk.
| Option | Cost | Complexity | Risk |
|---|---|---|---|
| DIY | Low | High | High |
| Hire | Very High | Medium | Medium |
| Fragmented stack | High | Very High | Medium |
| Mida OS | £350 | Low | Low |
“We run your startup’s back office — so you can focus on building.”
For founders who want to move fast without breaking things.
UK early-stage
Incorporated or about to be.
Pre-seed → Series A
Venture-backed or planning to raise.
Hiring
Adding their first or next 10 hires.
Ambitious
Want institutional-grade ops from day one.