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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
Who We Help
Accounting
Bookkeeping, accounts & tax handled end to end.
Self Assessment Tax Returns
Compliant and Efficient UK Self Assessment.
Bookkeeping
Expert Bookkeeping and Monthly Reports.
Research and Development
R&D Tax Credits Service.
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.
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.

Company setup, bookkeeping, year-end accounts and tax, all in one place.
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Send an enquiry
Business owner working through tax paperwork
Accounting & Tax
Late on filing your taxes?

Hire a Sleek accountant and never have to worry about deadlines again.

Book now
Business owner working through tax paperwork
Accounting & Tax
Late on filing your taxes?

Hire a Sleek accountant and never have to worry about deadlines again.

Book now
Business owner working through tax paperwork
Accounting & Tax
Late on filing your taxes?

Hire a Sleek accountant and never have to worry about deadlines again.

Book now
Run and Grow your existing business
Accounts and tax
Self assessment tax
man and woman smiling looking at camera, in office setting with paperwork, laptop and phone
Start a new business
Company formation
Investor readiness

From registration to year end, fully handled

A qualified specialist on every file

Your company file2026/27
Incorporation and company secretarialNickyIncorporations
Accounts, tax, VAT and payrollChloeACCA
Five services, two named people

AI where it’s faster, people where it counts

Year end, 31 MarchWho did what
AI1,284 transactions coded, return drafted5 min
Chloe reviewed the 3 flags, corrected 1, filed40 min

Same-day answers, deadlines never missed

Average reply
1h 24m
This month, across 23 messages
Next deadline
14 Feb
Confirmation statement
On track

One team for everything

Your planAll services
IncorporationRegistered officeCompany secretary BookkeepingAccountsTaxVATPayroll
One invoice£130 a month, two named contacts

Stephen Hendry

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”

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.”

Victoria Haynes

CEO & Founder, Neon 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​

SYNCR
“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 Francis

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.”

Tim Coen

North 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!”

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
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

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
  • Nobody catches the mistake but HMRC
Star Icon SLEEK ACCOUNTING
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
  • A named accountant catches it, and signs off

See what your accountant approved

Nothing goes out on AI alone
You see the corrections, not just the result
Every deadline tracked in the same place

Guides for UK founders

Smart business banking with

  • Set up together. Company registration and business banking in one guided journey.
  • Multi-currency, low fee. Hold currencies in one place with fee-free FX within your plan allowance.
  • Stay in control. Smart company cards with built-in spend controls and team permissions.
Register with Sleek and unlock your free Revolut Business trial today
Book your appointment

Stay in the know

Learn more

Learn more

Learn more

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.

business meeting
fsb logo

We ask you to check our work.
We let someone check ours.

Independently assessed
Re-earned every three years
People & planet in the decision

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.

Ellerston Capital logo

Ellerston focus on growing and protecting clients’ wealth.

Cloud software for automated accounting and financial management.

Toby Denwood
Toby Denwood
ATT
Tax Manager
Chloe Waite
Chloe Waite
MAAT, ACCA
Accounts Manager
Holly Chapman
Holly Chapman
MAAT
Senior Accountant
Noorahmad Khan
Noorahmad Khan
ACCA
Account Manager
Nuzhat Haider
Nuzhat Haider
ACCA
Senior Accounting Manager
Toby Denwood
Toby Denwood
ATT
Tax Manager
Chloe Waite
Chloe Waite
MAAT, ACCA
Accounts Manager
Holly Chapman
Holly Chapman
MAAT
Senior Accountant
Maddison Owen
Maddison Owen
AAT
Accountant
Noorahmad Khan
Noorahmad Khan
ACCA
Account Manager
Nuzhat Haider
Nuzhat Haider
ACCA
Senior Accounting Manager
Carles M,
Sleek Advisor

Ready to get started with us?

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