Every audit we sign is verifiable on the UK Audit Register, led start to finish by the specialist who signs the report, and quoted as a fixed fee before any work begins.
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You can verify our audit registration before you ever pick up the phone. MMBA is listed on the UK Audit Register, the public record kept on behalf of the accountancy regulators, under our ACCA registration.
Why registration matters:
A firm can describe itself as an audit firm without holding this registration. Only a registered auditor can sign a report that carries this weight, so it’s worth checking before you commit to anyone.
Our audit work is specialist-led. Every client has a named audit specialist as their single point of contact, from the first planning meeting to the signature on the report, not a junior you never meet. That specialist carries the engagement throughout, so the person who scoped the audit is the same person who signs it.
We work with FCA-regulated firms, financial services businesses, and companies across the property and medical sectors, alongside owner-managed businesses of any size. The audit itself doesn’t change with the client, every engagement gets the same registration, the same specialist-led process, and the same level of scrutiny.
Explore the specialisms across our audit practice, from statutory and external audits to sector-specific compliance and financial services work.
MMBA’s audit and assurance experts provide detailed financial reviews to improve business credibility and investor trust. We go beyond compliance by helping you strengthen your financial integrity and future strategy.
Our in financial sector audits ensure full regulatory compliance and transparent reporting. We help banks, insurers, and investment firms maintain stakeholder confidence through precision and reliability.
Our external audit team offers independent assessments to verify your company’s financial position. We focus on accuracy and accountability, and make sure your statements meet statutory requirements.
At MMBA, we perform statutory audits with attention to UK regulations. Our auditors identify risks, evaluate internal controls, and deliver reports that add genuine value to your business.
Our compliance audit services help you stay ahead of evolving laws and industry standards. From internal controls to reporting frameworks, we make sure your organisation operates efficiently, and within legal bounds.
Most “do I need an audit” guides give you the £15m turnover figure and stop there. That’s not the full picture, and it’s easy to get wrong.
Use the tool to check your position against the current UK small-company thresholds, effective for financial years beginning on or after 6 April 2025: turnover, balance sheet total and average employees. Only two of the three need to apply, not all three, and the tool is built to reflect that exactly.
It also checks the things that override the size test entirely, since any one of these can require a statutory audit regardless of your turnover or balance sheet:
Answer the questions and you get an instant result with the reasoning behind it, not just a yes or no.
If the tool comes back showing you’re likely exempt, that’s often where the voluntary audit question starts, lenders, investors and buyers can still ask for one even when the law doesn’t require it. If it flags a requirement or a position that needs a closer look, one of our audit specialists can confirm it and quote a fixed fee.
LLPs, charities and CICs follow different rules. This tool gives a general guide based on your answers; speak to one of our audit specialists to confirm your exact position.
This tool was built using AI and is provided for guidance only.
FCA-regulated and financial services audits are the core of our London audit practice. These engagements carry rules that a general audit practice meets only occasionally, and getting them wrong reaches further than the accounts, it can affect a firm’s authorisation to trade.
Our regulated audit work covers:
If your business answers to the FCA, that’s the conversation to start with us first.
Every MMBA audit follows the same process, whether it’s your first audit or your tenth.
We talk through your business, your regulatory position, and what the audit needs to cover.
You get a written scope and a fixed fee before anything else happens.
We identify the areas that need the most testing, based on your business, not a standard checklist.
Testing takes place against your accounting records and controls.
The audit specialist who scoped the engagement reviews the fieldwork and forms the opinion.
You receive the signed report, ready for Companies House, your bank, or whoever asked for it.
MMBA audits London businesses where the accounting treatment, not the testing, is the demanding part. Our practice is built around regulated and sector-specific engagements rather than general company audits alone.
Across all of them, the pattern holds: specialist accounting handled by a named audit specialist who signs the report. You can see how that plays out across other sectors in our case studies.
You’ll know the cost of your audit before it starts, not after. Every MMBA audit is quoted as a fixed fee, agreed in writing, and we don’t bill by the hour, so nothing changes once the work is underway.
The fee reflects the actual work involved: the size of your balance sheet, the number of transactions we test, and whether the engagement sits under a regulatory regime such as CASS. A regulated audit takes more work than a standard company audit of the same turnover, and the fee reflects that difference honestly rather than surprising you with it later.
Every MMBA audit is led by a specialist who stays with it from planning to sign off, not a name that changes partway through. Our audit team combines Big 4 and Top 10 training with the direct client contact a larger firm rarely offers.
Book a call to talk through your audit position, whether you’re checking if you need one or ready to get started. Every audit is quoted as a fixed fee, agreed in writing, before any work begins.
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We don’t charge by the hour. Our fee reflects the size of your balance sheet, the volume of transactions we test, and whether the engagement falls under a regulatory regime such as CASS. A regulated audit is more work than a standard company audit of the same turnover, and we price that difference upfront rather than after the fact.
Check three things, in this order. Audit registration on the UK Audit Register, experience in your sector, and who will actually sign your report. Registration isn’t negotiable. A firm can call itself an audit firm without holding it, and only a registered auditor can sign a report that Companies House, your bank or an investor will accept. If you’re comparing firms, our guide to the top audit firms in London sets out how the market compares.
Use the tool above to check your position against the current UK thresholds for financial years beginning on or after 6 April 2025. Turnover of £15m, balance sheet total of £7.5m, and 50 average employees. Only two of the three need to apply. FCA or PRA regulation, group membership, or a requirement in your Articles can trigger an audit regardless of size.
A registered auditor with direct experience of the specific regime does. MMBA audits FCA-authorised firms under CASS 5 and CASS 7, led by audit specialist Mirza Sonaver Baig, who holds partner-level responsibility for client money engagements from planning through to sign off.
MMBA does. Every audit we take on is quoted as a fixed fee, agreed in writing, before any work starts. We don’t bill by the hour, so the number doesn’t move once fieldwork is underway.
Yes. Changing auditor is a normal process, usually done at your AGM or by written resolution. Your outgoing auditor is entitled to make representations to shareholders if they have concerns. We can talk you through what’s involved for your company structure.
MMBA’s London audit practice is built around sectors where the accounting treatment is the demanding part rather than the testing. That covers FCA-regulated firms, digital asset and cryptocurrency businesses, property and real estate companies, and medical practices including GPs, dentists, pharmacists and care homes.
Look for a registered auditor who gives you a named specialist rather than a rotating team. At MMBA, every client has one audit specialist as their single point of contact, from the first planning meeting to the signature on the report. That matters more at SME scale, where you’re dealing with the firm directly rather than through layers.
Startups usually need an audit for one of three reasons. An investor or lender asks for one, the Articles require it, or the company has crossed the small-company thresholds faster than expected. We handle all three, and the first conversation is normally about whether you need an audit at all rather than how much it costs.
Search the UK Audit Register, the public record kept on behalf of the accountancy regulators. MMBA is listed there under our ACCA registration. You can check any firm before you speak to them, and it’s worth doing before you commit.