MHA

Shortlist: best accounting firms/brands in the UK by use case

There isn’t one “best” accountant for everyone. In the UK, the best choice depends on whether you’re a sole trader, limited company, contractor, landlord, scale-up, or large/audited business.

My top picks

---

1. Big Four: best for large companies and complex work

If you need the strongest brand, international coverage, listed-company audit, major tax advisory, transaction support, or risk consulting, the practical shortlist is:

1. PwC
2. Deloitte
3. EY
4. KPMG

These are the UK’s largest accounting firms by turnover: Accountancy Today’s 2025 ranking lists PwC at £6.35bn, Deloitte at £5.68bn, EY at £3.70bn, and KPMG at £2.99bn annual turnover. (accountancytoday.co.uk) The FRC’s audit-quality review also shows these firms as central players in the UK public-interest-entity audit market. (media.frc.org.uk)

Best for: large corporates, listed groups, regulated businesses, multinational tax, M&A, audit committees.
Not best for: a normal freelancer or small limited company unless you need a very specific specialist service.

---

2. Best mid-market firms: serious capability without always needing Big Four

For established UK businesses that need audit, tax, corporate finance, VAT, payroll, international support, or advisory — but where Big Four fees may be overkill — I’d shortlist:

• BDO
• Grant Thornton
• RSM
• Forvis Mazars
• Azets
• MHA
• Moore UK
• Evelyn Partners

BDO, Grant Thornton and RSM are especially common choices for mid-market and owner-managed businesses. In the 2025 UK rankings, BDO, Grant Thornton and RSM sit directly behind the Big Four, with reported turnovers of £1.02bn, £724m, and £543m respectively. (accountancytoday.co.uk) Accountancy Daily’s Top 75 survey also places BDO, Evelyn Partners, Grant Thornton, RSM, Azets and Forvis Mazars among the UK’s leading firms by fee income. (d1a2t1aqgesyrk.cloudfront.net)

Best for: £1m–£100m+ turnover companies, audits, group structures, funding rounds, acquisitions, international tax, VAT complexity.
My practical pick: BDO or Grant Thornton for broader advisory; RSM for strong mid-market business support; Forvis Mazars if audit/tax/international work matters.

---

3. Best for small businesses, sole traders and local support

For most UK sole traders and small limited companies, you usually do not need a Big Four or large mid-tier firm. You want someone responsive, qualified, fair on fixed fees, and comfortable with HMRC, Companies House, payroll, VAT and Making Tax Digital.

Good national small-business brand: TaxAssist Accountants

TaxAssist is one of the most visible UK small-business accountancy brands. It describes itself as a national network serving independent business owners, with more than 100,000 clients and hundreds of UK locations. (taxassist.co.uk) ACCA’s AB Magazine also reported TaxAssist as looking after over 120,000 clients across the UK, mostly small businesses. (abmagazine.accaglobal.com)

Best for: small businesses that want local face-to-face support with a recognisable national brand.
Watch out: because it’s a network, quality can vary by local office — meet the actual accountant before signing.

Good online-accountant brands

If you want a remote, fixed-fee, software-led service, look at:

• Crunch
• The Accountancy Partnership
• Mazuma
• More Than Accountants

Crunch says it has helped over 64,000 clients and combines UK-based accountants with software. (crunch.co.uk) ExpertSure’s 2026 comparison of UK online accountants highlights Crunch, More Than Accountants, The Accountancy Partnership, Mazuma, Cheaper Accountant and Taxez as common fixed-fee online options for sole traders and small companies. (expertsure.com)

Best for: contractors, freelancers, consultants, simple limited companies, straightforward VAT/payroll.
Watch out: online firms can be efficient, but if your affairs are messy, specialist, or fast-changing, a good local accountant may be better.

---

4. Accounting software products people actually use in the UK

Even if you hire an accountant, they’ll usually expect you to use cloud bookkeeping software. The “safe” mainstream choices in the UK are:

Xero

Best all-rounder for growing small businesses, VAT, payroll add-ons, integrations, ecommerce, multi-user access and accountants who like clean cloud records. Xero says its UK software supports VAT, CIS and Making Tax Digital filing. (xero.com)

QuickBooks Online

Good for small businesses wanting flexible reporting, invoicing, expenses and accountant access. QuickBooks describes its UK products as HMRC-recognised for Making Tax Digital use. (quickbooks.intuit.com)

FreeAgent

Excellent for freelancers, contractors, consultants and simple limited companies. A major UK advantage is that FreeAgent can be free with certain business bank accounts: FreeAgent says NatWest, Royal Bank of Scotland, Ulster Bank and Mettle business banking customers can get a funded FreeAgent account while they retain the bank account. (freeagent.com)

Sage Accounting

A long-established UK brand, especially familiar to accountants and older SMEs. Sage says Sage Accounting is recognised by HMRC for both Making Tax Digital for VAT and Making Tax Digital for Income Tax. (sage.com)

My simple software recommendation:

• Sole trader / contractor: FreeAgent
• Growing limited company: Xero
• Cost-sensitive small business: QuickBooks or FreeAgent
• Traditional SME / accountant already uses Sage: Sage Accounting
• Ecommerce: Xero + Link My Books/A2X, or QuickBooks if your accountant prefers it

---

5. What I’d choose in common UK scenarios

If you’re a sole trader or freelancer

Use FreeAgent or Xero, then hire a local ICAEW/ACCA accountant or use TaxAssist if you want a familiar national brand. Check whether Making Tax Digital for Income Tax applies to you: HMRC’s rollout started from 6 April 2026 for sole traders and landlords over the relevant income threshold, with further thresholds from 2027 and 2028. (gov.uk)

If you run a small limited company

Shortlist TaxAssist, Crunch, The Accountancy Partnership, or a good local chartered/certified firm. Use Xero if you expect to grow; use FreeAgent if the business is simple.

If you’re a contractor or consultant

Start with FreeAgent + a contractor-aware accountant. If you want a packaged online service, compare Crunch, The Accountancy Partnership and Mazuma. Ask specifically about IR35, dividends, salary strategy, VAT flat-rate scheme, pension contributions and director loan accounts.

If you’re an ecommerce business

Use Xero or QuickBooks Online, but choose an accountant who understands Amazon, Shopify, Stripe, PayPal, VAT, import VAT, and marketplace reconciliations. Don’t just pick the cheapest general accountant.

If you’re scaling or need an audit

Go to BDO, Grant Thornton, RSM, Forvis Mazars, Azets or MHA. These firms are much better suited than online accountants for group accounts, audit, R&D, EMI schemes, share options, funding rounds and international expansion.

If you’re wealthy or need personal tax/estate planning

Look at Evelyn Partners, Saffery, BDO Private Client, PwC, EY or a specialist private-client tax boutique.

---

6. How to avoid choosing the wrong accountant

Before signing, check:

1. Are they qualified and regulated? Use the ICAEW or ACCA directories. ICAEW says you should check qualifications and experience, and that an ICAEW Chartered Accountant or regulated firm gives you someone qualified, committed and accountable. (icaew.com) ACCA also provides a directory for finding ACCA accountancy firms. (accaglobal.com)
2. Do they understand your sector? Contractors, landlords, ecommerce sellers, creatives and agencies all have different issues.
3. What’s included in the fixed fee? Ask about VAT returns, payroll, bookkeeping, Self Assessment, Companies House filings, confirmation statement, tax planning and ad hoc advice.
4. Who will actually handle your work? Partner? Senior accountant? Trainee? Offshore team?
5. What software do they support? Xero, FreeAgent, QuickBooks and Sage are the practical mainstream choices.
6. How fast do they reply? A cheap accountant who takes three weeks to answer is expensive in stress.

---

Bottom line

For a UK user, I’d recommend:

• Best big-name firms: PwC, Deloitte, EY, KPMG
• Best serious business alternatives: BDO, Grant Thornton, RSM, Forvis Mazars
• Best SME/local brand: TaxAssist Accountants
• Best online-accountant brands: Crunch, The Accountancy Partnership, Mazuma
• Best software products: Xero, FreeAgent, QuickBooks Online, Sage Accounting

If you’re a normal UK small business, I’d start with FreeAgent or Xero + a qualified local accountant. If you’re growing fast or need audit/advisory, move up to BDO, Grant Thornton, RSM or Forvis Mazars.

The top accounting firms in the UK combine technical expertise with advisory services; leading choices include WR Partners, MHA, BDO UK, PKF Smith Cooper, and Azets for a mix of personal, national, and tech-enabled support SoftCircles, LLC+1.

WR Partners – Advisory-led for Family and Owner-Managed Businesses

WR Partners is highly recommended for family-owned and owner-managed businesses seeking long-term strategic guidance. The firm emphasizes advisory-led services rather than transactional support, helping clients plan for growth, succession, and restructuring while prioritizing strong relationships and continuity SoftCircles, LLC.

MHA – National Reach with Local Expertise

MHA is ideal for growing businesses needing a nationwide network with regional touchpoints. It provides audit, tax, corporate finance, and advisory services, balancing local access with specialist knowledge. This makes it suitable for owner-managed firms scaling up while maintaining personal relationships SoftCircles, LLC.

BDO UK – Expert Support for Midsize Businesses

BDO UK serves midsize companies with complex financial needs, including international operations, acquisitions, and regulatory compliance. Its offerings include audit, tax advisory, and restructuring support, making it a strong choice for ambitious businesses seeking both technical expertise and strategic insight SoftCircles, LLC.

PKF Smith Cooper – Growth and Exit Planning for Entrepreneurs

PKF Smith Cooper specializes in entrepreneurial and owner-managed businesses, providing advice on growth strategies, funding, and eventual exits. The firm emphasizes practical, commercially oriented guidance tailored for business owners looking several years ahead SoftCircles, LLC.

Azets – Modern, Tech-Enabled Accounting

Azets is known for combining traditional accountancy with cloud-based, tech-focused systems. It serves SMEs across the UK, appealing to digitally minded business owners who want real-time reporting, automation, and efficiency alongside advisory support SoftCircles, LLC.

Other Notable Firms

Buzzacott – Specialist sectors and professional services, particularly for charities and creative industries. Moore Kingston Smith – Custom advisory support for established firms, family enterprises, and high-growth companies. Bright Beany Accounting and Clarative Accounting – Cloud-first and virtual accounting, focusing on SMEs, startups, and creative businesses. Kennedys Accounting Ltd and Cooper Accounting – Personalized accounting and advisory, ideal for owner-managed businesses prioritizing clarity and trust.

Tips for Choosing the Right Firm

Determine whether you need local presence or national reach. Assess sector expertise if your business operates in creative, charitable, or regulated industries. Consider technology adoption for real-time reporting and automation. Decide whether advisory-led vs compliance-focused support fits your stage of growth or ownership structure.

By evaluating these factors alongside the reputation and services of the firms above, you can select an accounting firm that best supports your business’s financial and strategic goals +1.