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AI for legal firms

Almost every AI product marketed to law firms is built for the largest ones and stops at the same two tasks: reviewing documents and researching case law.

Best for
Repetitive admin around your core system
First build
One workflow, scoped narrow
Ownership
Yours from day one
Line diagram of the admin workflow sizrok automates for legal firms.

Luminance, Harvey, CoCounsel and the rest do that at scale, and they do it well, but they are priced for firms many times your size and they are single purpose tools, sold on the assumption that review and research are where a firm's time goes.

For a high street or mid market firm, they are not. The hours disappear into client intake and conflict checks, opening and running matters, drafting from precedents, AML and source of funds, file and deadline management, and the billing admin around all of it.

The enterprise tools touch none of that, and the case management platforms that do only offer AI as a bolt on feature locked to their own product.

That is the gap this page is about. Your fee earners lose billable hours to intake, matter admin, drafting from scratch and AML checks, while enterprise legal AI quotes six figures for a tool that only helps with review.

Sizrok builds bespoke AI automation for UK legal firms around the whole firm workflow, wired into the case management system you already run, whether that is Leap, Clio, Actionstep or iManage.

We build it to the SRA's requirements from the start: informed client consent, fee earner due diligence on every AI output, and data protection so no vendor trains on your firm's data, with a human sign off and an audit trail on everything.

Book a discovery call and we will start with the workflow costing your firm the most billable time.

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What AI can actually do for legal firms

In plain terms, AI for legal firms is the use of language models and automation to take on the intake, matter admin, first draft and compliance work that fill a fee earner's day, so more of the time goes to advice and advocacy and less to the grind around them.

It does not give legal advice, exercise judgement or carry professional responsibility. It qualifies, drafts, checks and tracks so the solicitor can review and decide faster, always under supervision.

The AI use cases for legal firms that repay the effort run across the whole firm, not just document review. Qualifying client enquiries and running conflict checks. Opening matters and handling the setup admin.

Drafting from your own precedent bank for a fee earner to settle. Reviewing and summarising documents. Running AML and source of funds checks.

Managing deadlines and files. Keeping client comms on cadence. Preparing time records and draft invoices.

In each case the routine qualifying, drafting and checking is machine made and the legal judgement is not. Our guide to AI agents and our AI integrations guide go through how these are built.

When we talk about generative AI for legal firms here, we mean drafting from your precedents, summarising and preparing first versions, not settling advice or issuing anything to a client, which stays with the solicitor.

Which legal workflows we automate

The most useful way to look at the work is by which part of the firm produces it. A law firm is really several operations running side by side, taking work in, producing documents, running matters and billing for them, and each generates its own repetitive admin.

What we build first depends on whichever one is drawing the most billable time away from fee earning.

Intake and onboarding is the first stage: qualifying enquiries, running conflict checks, opening matters and clearing AML and source of funds. The qualifying and checking automate cleanly; the decision to take a matter and clear the risk stays with a fee earner.

Documents is the second, and the one the enterprise tools crowd around: drafting from your precedent bank, reviewing and summarising, and bundling. The first draft and the summary are machine made; the legal content and the final wording are the solicitor's.

Matter management is the third: tracking deadlines, keeping file notes current, and running the client comms cadence so nothing slips between updates. Deadline bound, detail heavy work that suits automation a fee earner oversees.

Billing and admin is the fourth: preparing time records, drafting invoices, and pulling the reporting a partner needs. Routine month end work that quietly absorbs chargeable hours.

What makes the firm workflow worth automating as a whole, rather than one task at a time, is how the stages feed each other.

A matter opened cleanly at intake, with the conflict check logged and the client details captured once, carries clean data into drafting, into the matter file and into billing without anyone rekeying it.

Automate intake alone and you still save hours; automate the chain and the same client record moves through the firm untouched, which is where the compounding sits and where a piecemeal tool never reaches.

Several of these are not unique to law, and we build the same automations for other businesses. If a specific one is yours, our guides to AI document review, automating document processing, improving internal knowledge access and AI search for company documents cover each in detail.

The same approach carries over to other professional service firms, and you can see it applied to recruitment agencies, marketing agencies and accountants.

Why bespoke and SRA compliant beats an enterprise tool

When the admin starts eating the billable hours, the tempting move is to buy an enterprise legal AI product or switch on the case management platform's AI feature. For document review the enterprise tools are strong.

For the firm workflow around it they fit poorly, and it is worth being specific about why. They are single purpose tools, built for review and research and priced for firms far larger than yours, with nothing to offer your intake, your matter admin, your AML or your billing prep.

A bespoke build does the reverse. It automates the daily workflow that is actually costing you, wired into the case management system you already run, and leaves your matters, your precedents and your data where they are.

You get the whole firm covered, not just the review step, without an enterprise licence or a migration onto anyone's platform.

There is a compliance point underneath this that is not decorative but the whole foundation: legal work is regulated, client data is privileged, and any automation touching a matter has to keep a human in charge and an audit trail behind it, never an autonomous system acting on its own.

There is one thing AI cannot do here, and it should be said plainly. Can AI replace legal firms? No. Legal judgement, advice, advocacy and the professional responsibility a solicitor carries are exactly what does not and should not automate.

What automates is the intake, the matter admin, the first draft and the compliance checking around those judgements.

Done well, AI does not shrink the fee earner's role; it clears the admin and the first draft grind so more of the week goes to advice and advocacy, the work clients actually pay for.

That is the whole reason the build wraps around your case management system instead of arriving as an enterprise platform you have to move the firm onto.

Built for SRA compliance

The trust question in law is the sharpest of any profession we work with, because the work is regulated, the data is privileged, and the regulator is watching AI closely, so it is worth being direct. The SRA sets three requirements for AI use, and we build to all three.

There must be informed client consent, so the use of AI on a matter is disclosed and agreed, not hidden.

There must be competence and due diligence, so a fee earner checks the AI output rather than trusting it, and the automation is designed to surface work for review, never to act unsupervised.

And there must be data protection, so the vendor does not train on your firm's data and privileged information stays inside your control. This is not us working around the regulator.

In May 2025 the SRA authorised the first AI driven law firm, Garfield.Law Ltd, only after satisfying itself that the firm could quality check its work, keep client information confidential, guard against conflicts and manage the risk of AI hallucinations, and on the condition that the system takes no step without client approval (SRA, press release, 6 May 2025).

That is the shape of compliant AI in law: human control, disclosure and oversight built in, which is exactly how we build.

This holds for firms across the UK. We work with practices from London, Manchester and Birmingham to firms in Bristol, Leeds, Glasgow, Edinburgh and Cardiff, and because the build is remote and stack based it is not tied to where the firm sits.

How we operate across the UK is described in UK AI automation agency.

What a legal firm build costs

A single figure on the page would mislead almost every firm that read it, so we agree the price at discovery and hold it, once the workflow and the matter volumes are in front of us.

What moves it is the scope: how many workflows you want automated, how many systems have to be connected, how deep your precedent bank runs, and how much volume passes through each stage. A single build, intake and conflict checks, is a contained piece of work.

Automating intake, drafting, matter management and billing across the whole firm is a programme, staged so each phase pays for itself before the next is scoped.

It helps to be concrete about where the money actually leaks, because it is rarely the one task a firm first notices.

It is the fee earner qualifying an enquiry that was never going to convert, the ten minutes rekeying client details from the intake form into the case management system, the conflict check run by hand across three matters, the precedent hunted down and stripped of the last client's details before the new draft can start, the deadline diarised twice because two systems do not talk.

None of it is billable, all of it recurs on every matter, and it is spread thin enough across the week that no single instance looks worth fixing.

Totalled across a fee earner's caseload over a year, it is often the equivalent of weeks of chargeable time, which is the figure an audit is built to surface.

The comparison that matters is against the alternatives a firm actually weighs. An enterprise legal AI licence is a large annual cost for a tool that only touches review and research, and adding a paralegal or an admin hire is a salary that recurs every year.

A bespoke build is a fixed capability, not a per seat enterprise licence or a headcount that grows with the workload, and it hands back the billable hours currently lost to admin.

Firms do report faster document turnaround and meaningful billable hours reclaimed once intake and matter admin are automated; we would rather establish the real figure against your own matters at discovery than print a headline number here that may not hold for your firm.

A law firm build in concrete terms

A concrete firm shows the point more clearly than any general claim.

Take a mid market firm whose fee earners lose a large share of each week to intake and conflict checks, opening matters by hand, and drafting routine documents from scratch, all of it chargeable time spent on work that does not need a solicitor's judgement. We start narrow.

The first build automates intake end to end, qualifying the enquiry, running the conflict check, clearing AML with the results surfaced for a fee earner to approve, and opening the matter in the case management system, all under supervision and logged.

The initial cost is contained, the fee earners get something they can test on the next intake immediately, and anything we add afterwards is earned on what the first build returns rather than taken on trust.

From there the same foundation extends. Once intake runs itself, drafting from your precedent bank follows, producing first versions for a fee earner to settle rather than starting every document from a blank page.

Then matter management, with deadlines tracked and comms kept on cadence, and finally the billing prep, with time records and draft invoices assembled for review.

Nothing in this makes you switch case management system, and there is no enterprise licence or per seat count climbing as the firm grows; the automation sits around the stack you already run and drives the workflow through it.

The process inside a law firm build

We begin with a discovery and audit: we take one real firm workflow, a matter from enquiry through to opening and first draft, and follow it end to end, marking exactly where the billable hours are lost to admin and where work is duplicated between systems.

That audit tells us which tasks are worth automating and in what order, and we build the bespoke agents and automations to match, shaped around your practice areas, your precedents and the way the firm already works.

We connect them to the tools you already run, your case management system, email and precedent bank, so nothing about your setup has to change.

Rather than a rehearsed demo, we run the build on a live matter and confirm its output would pass a fee earner's review and stand up to an audit trail, then hand it across and keep it current as SRA guidance, your practice and your process evolve.

Nothing here makes you switch case management system, and there is no enterprise licence climbing every time the firm grows.

A contract read, with the ambiguity raised not answered

What partners and practice managers ask about AI for legal firms

It automates client intake and conflict checks, opens matters, drafts from your precedent bank, reviews and summarises documents, runs AML and source of funds checks, manages deadlines and files, and prepares time records and invoices. The legal judgement, the advice and the professional responsibility stay with the solicitor.
Mostly to remove the admin and first draft grind around fee earning. AI qualifies enquiries, runs conflict and AML checks, drafts routine documents from precedents for review, tracks deadlines and prepares billing, so fee earners spend less time on matter admin and more on advice and advocacy, always under supervision.
The ones that repay the effort are client intake and conflict checks, matter opening and admin, drafting from a precedent bank, document review and summarisation, AML and source of funds, deadline and file management, client comms, and billing and time record prep. Each removes routine work while a fee earner keeps the judgement.
No. Legal judgement, advice, advocacy and the professional responsibility a solicitor carries are exactly what does not automate. AI removes the intake, matter admin and first draft grind so fee earners spend more of the week on advice and advocacy, but the firm's core legal role stays firmly human and supervised.
It is worth it where a repetitive, high volume workflow is eating billable time, most often intake, matter admin or routine drafting. It earns nothing where a firm's caseload is thin or every matter is drafted fresh. If the numbers will not justify a build, the discovery audit says so up front, not after you have paid.
Billable hours reclaimed from admin, faster document turnaround, intake and AML handled consistently, a firm workflow built to the SRA's requirements with human sign off and an audit trail, and a fixed capability rather than a six figure enterprise licence or another salaried hire.
Start with the workflow costing the most billable time, usually intake or routine drafting. Automate that one end to end around your existing case management system, prove it on the next matter, then extend into drafting, matter management and billing as each phase earns its place. Keep the fee earner's sign off and the SRA's requirements at the centre throughout.

Where this leaves your firm

Everything above is built to wrap around your case management system, to the SRA's requirements, with the sign off kept where it belongs.

If your fee earners are losing chargeable hours to intake, matter admin and drafting from scratch while enterprise legal AI only touches review, that is the workflow we take off the desk.

Book a discovery call and we will trace where your fee earners' billable hours are actually going, and what it would take to return them to fee earning.

Other sectors

The same method, different trade.

The admin differs by sector; the way we take it off your team does not. Here is where else we have built it.

Book a conversation

One real conversation about the admin in legal firms.

Nothing prepared. We follow one of your workflows end to end, work out where the hours actually go, and tell you plainly whether a bespoke build pays for itself. If it does not, we will say so.

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Scope one workflow.

Bring the process that costs you the most hours. We map it, find the bottleneck, and write a one page recommendation with a fixed price, yours either way.

Run the audit
ResponseWithin one working day
SectorLegal firms
ApproachCustom, never templated