Fiona OS · Legal Operating Assistant

Your law firm may be losing thousands of billable hours to admin. Fiona helps you find them.

Fiona OS helps law firms calculate, expose and reduce the hidden cost of manual work, document chaos and disconnected systems — without pretending AI replaces professional judgement.

Book a 25-Minute Hidden Cost Review

Built for cautious, serious UK law firms. Read the founder's letter →

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The Cost of Doing Nothing Calculator

Estimate your firm's hidden admin cost

25
£225
5 hrs
35%
44 wks
Estimated annual fee-earning capacity lost
£1,237,500
Potential recoverable value with Fiona OS
£433,125
Weekly lost value
£28,125
Monthly opportunity
£103,125
Lost hours / year
5,500
Recovered hours
1,925
Cost of delaying 6 months
£618,750

You may be losing the equivalent of 1.3 full-time fee earners every year to avoidable operational drag.

Book a 25-Minute Hidden Cost Review

This calculator is an estimate designed to start a commercial conversation. Actual results depend on firm structure, workflows, adoption, data quality and implementation.

What the numbers mean

Admin time is not a small problem. It compounds.

Every hour a fee earner spends searching for documents, re-keying data, chasing internal approvals or rebuilding knowledge that already exists somewhere in the firm is an hour that cannot be billed, recovered or reinvested.

The calculator shows you what that leakage looks like at your billing rates and headcount. The figure is often larger than partners expect — not because the firm is inefficient, but because operational drag is invisible until you measure it.

Fiona OS is designed to help firms find that drag, understand it, and reduce it — without disrupting the professional work that generates client value.

Fiona — AI Legal Operating Assistant
Meet Fiona

The AI legal operating assistant your firm didn't know it needed.

Fiona is not here to replace your lawyers. Fiona is here to remove the avoidable friction between your lawyers and the work clients actually pay for.

She helps surface documents, summarise matters, organise knowledge, prepare drafts, support workflows and reduce the invisible admin load that sits between your firm and better margins — keeping your people firmly in control throughout.

Find what matters

Locate documents, matter history, correspondence and internal knowledge faster.

Reduce repeated work

Turn recurring tasks and workflows into reusable assets that save time across matters.

Recover fee-earning time

Reduce admin drag so your fee earners can focus on valuable, recoverable client work.

Built For

Built for cautious, serious law firms

Fiona OS is designed for firms that know AI may help, but will not risk client trust, data security or professional judgement for the sake of a trend.

Firms with 10–200+ fee earners

Practices across commercial, property, family, employment and other areas losing capacity to avoidable admin.

Teams losing time to admin and duplication

Where fee earners spend hours each week searching, chasing, re-keying and repeating work that could be structured.

Managing partners seeking visibility

Partners who want to understand where operational leakage is occurring and quantify the cost of inefficiency.

Finance directors

FDs who want to understand the true cost of admin drag and model what recovery of that capacity could mean for the firm.

Operations leaders

Practice managers and COOs who need better workflows without disrupting the firm or requiring a major technology overhaul.

Firms that want AI with human control

Firms that want AI support without AI replacing lawyers — human-in-the-loop workflows where professionals retain judgement.

How Fiona Helps

Four practical ways Fiona helps

01

Find documents and matter history faster

Help fee earners locate the right documents, emails, precedents and matter context without trawling through disconnected systems.

02

Summarise and organise matter knowledge

Turn scattered information into structured, usable matter intelligence so teams can understand the position faster.

03

Reduce repeated manual workflows

Support repeatable legal and operational workflows so fewer expensive hours disappear into admin.

04

Expose hidden admin cost

Use the Cost of Doing Nothing calculator to show how small weekly inefficiencies compound into major annual capacity loss.

What Changes

What Fiona could change inside a matter workflow

Before Fiona
  • Fee earner searches across inboxes, folders and previous matters
  • Admin time is written off or never captured
  • Drafts, notes and matter context are scattered
  • Partners lack visibility over operational leakage
  • Knowledge trapped in people's heads or disconnected systems
  • Repeated work with no structured asset to show for it
After Fiona
  • Matter context is easier to surface
  • Repeated workflows become structured
  • Admin drag becomes visible and measurable
  • Lawyers remain in control of judgement and client advice
  • Less time lost, more time available for fee-earning work
  • Partners have better visibility of what is happening

These examples are illustrative. Actual outcomes depend on firm structure, workflows, adoption and implementation.

The People Behind Fiona OS

Built by people who understand the problem

Fiona OS was created by Matt Majcher, founder of Asideus, after seeing first-hand how much legal time disappears into admin, document search, repeated operational work and fragmented systems.

M
Upload founder-portrait.jpg
Matt Majcher, Founder of Fiona OS
Matt Majcher
Founder, Fiona OS & Asideus

Creator of the Fiona OS concept and the original "fee earner / Fiona" story. Matt founded Asideus to build practical AI systems for knowledge-intensive sectors.

R
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Richard Saupe, Marketing Strategy and Commercial Narrative
Richard Saupe
Marketing Strategy & Commercial Narrative

Richard supports Fiona OS with positioning, commercial storytelling and conversion strategy, helping translate complex legal technology into clear, buyer-focused messaging for law firms.

A
Asideus Team
Product, Workflow & Implementation

The Asideus team supports the development of Fiona OS as a practical operating layer for legal teams.

Ecosystem & Supplier Signals

Trusted supplier and ecosystem signals

Fiona OS is being developed with a careful focus on trust, implementation and responsible adoption. As the ecosystem grows, this section will highlight verified suppliers, partners, collaborators and implementation relationships.

A
Asideus
Founding development partner
M
Matter OS
Technology partner
C
Catch 33
Ecosystem relationship
L
Legal Operations Partners
Implementation relationship
A
AI Workflow Suppliers
Supplier category
I
Implementation Support
Delivery relationship
S
Security & Governance Review
Governance focus
D
Client Data Protection Focus
Compliance focus

Supplier and ecosystem badges are shown only where relationships are relevant, accurate and approved. Fiona OS does not imply client endorsement without permission.

Designed For Legal Data

Designed for legal data, caution and control

Fiona OS is built to be adopted responsibly — with governance, data caution and practical workflows at its core.

Calculator data processed in-browser — nothing stored or transmitted

Human-in-the-loop workflows throughout

Designed to support, not replace, professional judgement

No unnecessary hype or black-box decision-making

Clear security contact and responsible disclosure route

Built around adoption, governance and practical use

Firm-specific knowledge structure and governance

Security and governance-led thinking from day one

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Next Step

Book a 25-Minute Hidden Cost Review

A short, focused conversation to explore where your firm may be losing fee-earning capacity to admin, duplicated work and disconnected systems — and what that costs at your billing rates.

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