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Incorporation
Start your company
Formation Packages
Company Formation for UK residents
Your foundation to run and grow with ease.
Sleek Business Banking
Company setup and business banking simplified.
Investor Readiness
SEIS/EIS Advance Assurance.
Business Insurance
Business insurance from Markel Direct with 10% off as a Sleek customer.
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
Company Formation
Accounting
Bookkeeping, accounts & tax handled end to end.
Bookkeeping
Expert Bookkeeping and Monthly Reports.
Research and Development
R&D Tax Credits Service.
Self Assessment Tax Returns
Compliant and Efficient UK Self Assessment.
Local Company Incorporation
Your foundation to run and grow with ease.
SEIS/EIS Advance Assurance
Expert advance assurance application.
Research and Development
R&D Tax Credits Service.
Advisory Services
Who We Help
Limited Companies
Dedicated Accountant for LTD companies.
Sole Traders
Expert accounting, bookkeeping and filing.
Contractors
Specialist Support with IR35 Expertise.
Startups
Scale smarter with a dedicated startup accountant.
Ecommerce Businesses
A dedicated accountant who specialises in ecommerce.
Leeds Small Businesses
A real qualified accountant for your VAT, bookkeeping, payroll & year-end accounts
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.
Resources
Knowledge base
Blogs
Expert articles to help you build and grow your business.
FAQs
Find answers to our most popular questions.
Community
Join now
Join a community of entrepreneurs and business builders.
Partner Perks
Trusted partners supporting UK businesses.
Company Info
Know Sleek
About Us
Learn who we are and how we support entrepreneurs.
Our Culture
Learn what shapes the way we work.
Meet the Accountants
Meet the experts handling your finances.
Contact Us
Reach out to our team for help or enquiries.
Trust & Security
See how we protect your data and ensure compliance.

One accountant,
formation to growth

Bookkeeping, year-end accounts, tax and payroll, run by your own named accountant
Rated
by 3,800+ reviews on
Trustpilot
Partner logo
Forbes
Certified B Corporation
Federation of Small Businesses (FSB)
Business owner working through tax paperwork
Thinking of switching accountants?

We write to your current firm, collect your records and take over the filings. You do almost nothing.

Enquire now
Person completing their tax return
Behind on last year’s accounts?

Hire a Sleek accountant. We take over your filings, including the ones already overdue.

Enquire now
Founders planning their new business
Audit trail

CT600 • Year ended 31 Mar

  • Drafted return from 1,284 transactions 09:14
  • Flagged 3 entries for review 09:16
  • Toby Denwood corrected 1, approved and filed 11:02
Founders pitching to investors
Not sure what year one really costs?

Sign up with Sleek and every filing in your first year is priced before you start.

Enquire now

98%

customer satisfaction from
16,000+ survey responses

2,800+

UK accounting
clients

420k+

UK companies registered
over 20 years

certified for social &
environmental impact

Start where you need us

Accounts & corporation tax, filed

A qualified UK accountant keeps your books current and files your year-end accounts and corporation tax return with both Companies House and HMRC.
See accounting plans
man and woman smiling looking at laptop together

Bookkeeping done right

Fully managed UK bookkeeping with a dedicated bookkeeper. Learn more

Catch up on old books

Behind on previous years? We rebuild them and file what is outstanding. For companies behind on past filings. Enquire now

Your director’s tax return

Self assessment prepared and filed with HMRC. Required if you take a salary or dividends. Learn more

Get investor ready

EIS and EIS advance assurance, share structure and HMRC certificates, so your first round does not mean unpicking how the company was set up.
Learn more

R&D tax claims

Your claim prepared and submitted to HMRC. For companies developing a product or process.
Learn more
Woman working in her office

PAYE registration

Register as an employer with HMRC before your first payday. Needed to pay yourself a salary or hire anyone.
Enquire now

Manage payroll, and file it on time

PAYE, pensions and RTI submissions run every month, so nobody is paid late and nothing reaches HMRC late.
Enquire now

Register your company, year one covered

Filed with Companies House by a registered provider, with your address, service address and first confirmation statement included.
Learn more
woman smiling business owner looking at phone holding box

Registered office address

Registered office and director service address, with post scanned to your portal. Included in every formation package Learn more

Business account

Revolut Business set up alongside the company, with one month free. Free when you register with Sleek Learn more

Same day formation

Get your company incorporated on the same day for orders submitted before 1:00pm

From registration to year end, fully handled

A qualified specialist on every file
Your company file2026/27
Incorporation and company secretarialNicky Incorporations
Accounts, tax, VAT and payrollChloe ACCA
Five services, two named people
Example
Year end, 31 MarchWho did what
AI 1,284 transactions coded, return drafted 5 min
Chloe reviewed the 3 flags, corrected 1, filed 40 min
AI where it’s faster, people where it counts
Same-day answers, deadline tracked from day one
Average reply
1h 24m
This month, across 23 messages
Next deadline
14 Feb
Confirmation statement
On track
Your planAll services
Incorporation Registered office Company secretary Bookkeeping Accounts Tax VAT Payroll
One invoice£130 a month, two named contacts
One team for everything
Stephen Hendry
Stephen HendrySEFP 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”
Maximilian Cater
Taras GorevoyYolka LTD
“I’ve been working with Sleek in Leeds for 4 years now. Rosie and Ed always make sure that our accounts are up to date, payslips processed and correct tax codes assigned. I’ve been recommending them to everyone and only heard positive things about Sleek.”
Victoria Haynes
Victoria HaynesNeon Hope

“I met Ed from Sleek when he was visiting our coworking space in London. After a quick chat, Ed explained how I could move my accounts online and also discussed R&D tax credits. His advice has been invaluable!”

Ricky Hill
Ricky HillSYNCR
“I just gotta say, Sleek has been a lifesaver for our business! They always submit our filings in on time, and their tax advice is spot on. Seriously, they’ve made things so much easier for us. I’d totally recommend Sleek to anyone looking for awesome accounting help!”
Seb Francis
Seb FrancisTitus 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.”
Tim Coen
Tim CoenNorth Property Group Ltd
“After working with numerous accountancy firms over the years, I can honestly say Sleek is in a different league. I have and would recommend Sleek to any of my contacts and family!”
Powered by AI

Sleekbooks 2.0 coming soon

Coming soonSleekbooks 2.0

DIY with AI or Sleek Accounting?

YOU + AI
Cheaper in pounds. You pay in hours and risk.
  • You prompt, paste, and hope the coding is right
  • You prepare the CT600 and file it yourself
  • You find out the rules moved when a filing is rejected
  • You find the problem after the year has closed
SLEEKBOOKS
Same AI. Someone qualified answers for it.
  • AI codes every transaction. Your accountant checks it.
  • Your accountant prepares the CT600 and files it
  • Your accountant tracks the changes and flags what matters
  • Your accountant catches it while it’s still fixable

Everything your limited company needs, in one place

Accounting & tax

Most popular

From £75 /month*
*billed annually
Year-end accounts and corporation tax, prepared and filed.
Learn more
Backdated bookkeeping
£750
Catch up on past years’ books. Up to 100 transactions per financial year.
Payroll
£8 per payslip /month
PAYE, pensions and RTI submissions, run every month.
Self assessment tax return
From £275 +VAT
Your director’s personal tax return, prepared and filed with HMRC.
Learn more
Company formation

Most popular

From £250 +VAT
Register your UK limited company, filed with Companies House.
Learn more
R&D Tax credits
No upfront fee
Sleek manages your full HMRC claim from eligibility review to CT600 submission
Learn more
Investor ready (SEIS/EIS)
From £250 +VAT
SEIS/EIS advance assurance and share setup, ready to raise.
Learn more
Registered office & mailroom
From £44.95 +VAT
A London registered address, with post scanned to your portal.
Business Banking
FREE
Register with Sleek and unlock a free one-month trial of Revolut Business.
Learn more

You'll be live in days, not weeks.

01

Book an appointment

A specialist works out what you need, and what you don't.

02

We set you up, or switch you over

Switching? We write to your current accountant, so you don't have to.

03

You're live, and you can see everything

Every deadline, every filing, and what changed before it was submitted.

Book an appointment

Guides for UK founders

420,000+ UK companies registered, across 20 years

Sleek and Ltd Companies have been registering UK limited companies for two decades. What has changed is what happens next: a qualified UK accountant now takes the company on from day one, with AI doing the heavy lifting behind them.

We operate across the UK, Singapore, Hong Kong and Australia, so founders trading in more than one market keep it all in one place.
Learn more about Sleek
Operating in
UKSGHKAU
business meeting
Qualified UK accountanton your company from day one

Backed by world-class investors

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.

Ellerston Capital logo

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?

Contact us
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