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Expert Accounting & Finance for UK Businesses

From daily bookkeeping to year-end accounts and HMRC compliance — we handle the numbers so you can focus on growing your business. Fixed fees, no surprises.

Complete Financial Management Under One Roof

Whether you're a sole trader filing your first self-assessment, a limited company needing year-end accounts, or a growing business that needs payroll and VAT handled — we've got you covered.

Every client gets a dedicated accountant who knows your business inside out. No call centres, no ticket queues — just direct access to someone who cares about your numbers as much as you do.

📊 15 Services

Everything your business needs

A comprehensive suite of accounting and finance services, all included in our fixed-fee packages.

01

Accounting & Bookkeeping

Accurate, up-to-date books maintained on your preferred cloud platform. We reconcile transactions, categorise expenses, and keep your records audit-ready year round.

02

VAT Returns & Tax Compliance

Timely VAT return preparation and submission to HMRC. We ensure you claim everything you're entitled to and never miss a deadline.

03

Self-Assessment Tax Returns

Personal and partnership tax returns prepared and filed accurately. We identify all allowable expenses and reliefs to minimise your tax liability.

04

Year-End Accounts

Statutory accounts prepared to Companies House and HMRC standards. Clear, compliant, and delivered on time — every year without fail.

05

Management Accounts & Financial Reporting

Monthly or quarterly management reports that give you a clear picture of profitability, cash flow, and business health — so you can make informed decisions.

06

Making Tax Digital (MTD) Setup & Compliance

Full MTD setup including software migration, digital record-keeping, and compliant quarterly submissions. We handle the technical side so you don't have to.

07

Payroll Services

End-to-end payroll processing — payslips, RTI submissions, pension auto-enrolment, and year-end P60s. Your team gets paid on time, every time.

08

CIS Returns

Construction Industry Scheme compliance handled in full. We verify subcontractors, process deductions, and submit monthly CIS returns to HMRC.

09

Company Formation

Limited company incorporation done right — from choosing the optimal structure to registering with Companies House and HMRC. Typically completed within 24 hours.

10

Self-Employment Registration

We register you with HMRC as a sole trader, set up your UTR, and make sure you understand your obligations from day one. Simple, fast, stress-free.

11

VAT Registration

Voluntary or mandatory VAT registration handled from application through to first return. We advise on the best scheme — flat rate, standard, or cash accounting.

12

Companies House Compliance & Filings

Confirmation statements, director changes, registered office updates, and all statutory filings submitted accurately and before the deadline.

13

Director ID Verification (ACSP)

As an Authorised Corporate Service Provider (ACSP), we verify director identities for Companies House — a legal requirement for all UK company directors.

14

Registered Office & Director Service Address

Professional London service address for your registered office and director address. Keep your home address off public registers while staying compliant.

15

Cloud Accounting Setup & Support

Full setup, migration, and ongoing support for Xero, QuickBooks, Sage, and FreeAgent. We train your team and optimise your workflows for maximum efficiency.

🤝 Who We Help

Built for businesses like yours

We specialise in working with UK small businesses, sole traders, and property owners — people who want a real accountant, not a faceless firm.

🏢 Small Businesses 🔧 Contractors 💻 Freelancers 👤 Sole Traders 🏠 Landlords 🏗️ CIS Subcontractors 🚀 Startups
💎 Why Simplex

Why choose us for your accounting

📋

HMRC Registered Agent

We deal directly with HMRC on your behalf. Tax investigations, correspondence, and compliance — we handle it all so you never have to speak to the taxman.

☁️

Cloud-First Approach

Real-time access to your finances from anywhere. We set you up on Xero, QuickBooks, Sage, or FreeAgent and keep everything running smoothly.

💷

Fixed Monthly Fees

No surprises. No hidden extras. You pay one predictable monthly fee that covers everything. We quote before we start — always.

Fixed-fee packages — get a quote in minutes

Tell us about your business and we'll send a clear, fixed-fee proposal. No obligation, no pressure.

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We set up & support all major cloud accounting platforms
Xero QuickBooks Sage FreeAgent

Already on one? We'll slot right in. Starting fresh? We'll set it up for free.

Ready to switch to
stress-free accounting?

Book a free, no-obligation chat. Or just WhatsApp us — we're friendly, we promise.