Expert Accounting & Year-Round Peace of Mind – now at ‎‎ 20% OFF! .
Expert Accounting & Year-Round Peace of Mind – now at ‎‎ 20% OFF! . Offer ends in:
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Incorporation
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Formation Packages
Company Formation for UK residents
Your foundation to run and grow with ease.
Essential Formation Package
Register your company with address privacy.
Business Compliance Package
Start up with Accounting, Tax and Privacy built in.
Full Compliance Package
Incorporate with end to end admin managed.
Accounting
Run & Grow your business
Who We Help
Accounting
Full-service accounting for accurate and compliant financials.
Self Assessment Tax Returns
Compliant and Efficient UK Self Assessment.
Bookkeeping
Expert Bookkeeping and Monthly Reports.
Limited Company
Dedicated Accountant for LTD companies.
Sole Trader
Expert accounting, bookkeeping and filing.
Contractor
Specialist Support with IR35 Expertise.
Startup
Scale smarter with a dedicated startup accountant.
Advisory Services
Stay compliant
Specialist advice for key business and tax decisions.
Research and Development
R&D Tax Credits Service.
SEIS/EIS Advance Assurance
Expert advance assurance application.
Pricing
Start your company
Run & Grow your Business
Company formation prices
Flexible plans from setup to growth.
Accounting prices
Pricing that scales with your business needs.
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Expert articles to help you build and grow your business.
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Join a community of entrepreneurs and business builders.
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Know Sleek
About Us
Learn who we are and how we support entrepreneurs.
Our Culture
Learn what shapes the way we work.
Contact Us
Reach out to our team for help or enquiries.
Trust & Security
See how we protect your data and ensure compliance.

Expert Accounting
from Formation to Success

Your dedicated UK accountants handle it all from company setup to seamless bookkeeping, payroll, and tax compliance – all in one place.
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Trusted by 420,000 UK founders

Rated
by 3,000+ verified clients on
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End-to-End
Business Support
Dedicated
UK-Based Accountants
Smart App +
Human Expertise
Fully Compliant With
HMRC & Companies House

Services for every stage of your business journey

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Start a new business
From fully managed UK incorporation to SEIS/EIS advance assurance, we’ll help you start strong and get investor-ready.
Register my company
Get Investor Ready
Run and Grow your existing business
Stay compliant and stress-free with UK accountants managing your bookkeeping, VAT, tax returns, and more.
Manage Accounting
Bookkeeping & Tax

Included with all our plans

100% digital access to your information

Full online access to company documents, filings, and updates, always secure and compliant with Companies House and HMRC.

Dedicated UK-based
support team

Get expert help whenever you need it. Our local team is here to support you every step of the way.

Free business account referral*

Open a UK business account in minutes with our partner, Countingup

*Subject to approval

30 days money back guarantee

Try Sleek with confidence. If you’re not satisfied, we’ll make it right or your money back.

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Loved by entrepreneurs across the world

Stephen Hendry

CEO & Founder, SEFP LTD
“Emma has been amazing with the set up and formation of our company. She’s always at the end of the phone and has gone well beyond what’s required. Highly recommend and can’t wait to use her again for the next company purchase”
OMOTOLA AJAYI TRAVELS LTD

Oluwatosin Omotola

Entrepreneur, Founder, Omotola Ajayi Travelts Ltd

“I consider myself very lucky to have come across this wonderful organisation that helped me register my company. I was so confused and didn’t know how to go about it.”

Maximilian Cater

CEO & Founder
“Dealt with Emma Clark, Easy efficient and couldn’t praise how easy process to deal with open 2 companies and can’t praise how well she dealt with both.”
Seb Francis

Seb Francis

Co-Founder & Director, Titus Learning Ltd
“Nicky was extremely good at explaining the most productive ways of me getting my business set up and very friendly throughout the entire process, this experience alone, was far better and more informative than all the other companies I have spoken to.”

Kira

Entrepreneur
“What made special about our experience with the company is working with Nicky Perucho, Head of UK Incorporations. Every our request was met with care and speed in execution. Many thanks for looking after our account!”

Victoria Haynes

CEO & Founder, Neon Hop
“Emma was brilliant!! This was my first business set up so there was a lot of things I was unsure of and she helped me from the beginning to the end, I even called a few times after the set up and she was always very welcoming and helpful”
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Experience expert accounting that empowers your business to thrive

Get peace of mind with a dedicated UK-based accountant who handles your bookkeeping, tax, and compliance,so you can focus on growing your business.
Get a free quote

Smart technology that powers our award winning service

Our seamless online platform makes managing your accounts effortless , giving you real-time financial insights, easy document access, and secure collaboration with your dedicated accountant.
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Smart business banking with

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A fast, easy, and compliant way to open your business account – FREE when you sign up with Sleek.
  • Open in minutes – Apply online and start receiving payments right away
  • One app, all-in-one solution – Send invoices, track expenses, and stay tax-ready
  • Stay in control – Categorised expenses, tax reminders with financial insights.
Sign up with Sleek and get your free business account today
Book your appointment

Supporting Businesses Like Yours

Limited company

Expert accounting to keep your limited company compliant and growth-ready.

Startup Accountant

Smart, affordable accounting built for ambitious UK startups.
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E-commerce

Accounting that simplifies VAT, sales channels, and cash flow for online sellers. Learn more

Contractor

Specialist accounting to maximise take-home pay and stay compliant as a contractor. Learn more

Sole Traders

Hassle-free tax and bookkeeping support for sole traders. Learn more

How to get started with Sleek?

It’s easy and takes just a few minutes to complete the process in full
Step 01

Book your free consultation

Step 02

Discuss your requirements with our advisor

Step 03

We'll take care of the rest

Book your free consultation now

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20 years helping businesses thrive

With over 20 years of experience and a UK-based team, we specialize in making business incorporation with Companies House simple and efficient. Operating across the UK, Singapore, Hong Kong and Australia, we offer tech-driven solutions tailored for startups and small businesses, so you can focus on building and growing your venture from day one learn more.
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Backed by

A global investor headquartered in Singapore since 1991

Idea to IPO partners for the most exceptional founders in Asia.

Helping market leaders become global champions.

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Ellerston focus on growing and protecting clients’ wealth.

Cloud software for automated accounting and financial management.

Carles M,
Sleek Advisor

Ready to get started with us?

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