I was referred to Sleek UK by my partner as I had a bad experience with a number of accounting firms. The team have been really friendly even after my silly questions and I’ve found everything to be s... See more
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Company details
- Accounting firm
- Accounting Software Company
- Business administration service
- Business management consultant
- Business-to-Business service
- Tax advisor
About Sleek.com
Written by the company
Since our launch in 2016, we've helped hundreds of startups and businesses manage their accounting, tax and business compliance needs with our top cloud accounting solutions thanks to our talented team of accountants. With offices in the UK, Singapore, Hong Kong and Australia, we can act for clients across all of these countries.
Along with accounting and bookkeeping services, our expert accountants can help with tax relief, namely applications for SEIS/EIS Advance Assurance as well as R&D Tax Credits for businesses working in research and development.
We have quality accountants that cover a variety of industries including e-commerce, property, crypto and more, so you can ensure you're getting the right accountant to manage your books.
If you're interested in finding out more about our accounting services and how we can help your business, please visit sleek.com/ for further information.
We are also part of the Sleek Tech Group, a Singapore based organisation founded in 2017 with over 340 employees in 17 countries. Sleek leverages its proprietary technology to serve 450,000+ customers globally and to support their back office operation. Services include financial management, bookkeeping, CFO services and business insurance.
Contact info
4th Floor, 205 Regent Street, W1B 3HH, London, United Kingdom
- +44 3333 444 213
- sleek.com
Replied to 100% of negative reviews
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Accounting services are a disaster
We've been using Sleek for 18 months and their accounting services are almost non-existent. We were supposed to get monthly reconciliation and monthly reports. We've not received any, even after asking multiple times.
The annual financial statement was full of simple mistakes (such as confusing the bank statement balance at the beginning and the end of the month and putting unreconciled transactions in Accounts Receivables when their team was unable to match the document while they had it). We had back and forth for the financial statements for months and I had to spend dozens of hours fixing their mistakes. Our accountant also went MIA for weeks multiple times.

Reply from Sleek.com
Nicky has been amazing
Nicky has been amazing! Anytime I have a question, she responds within 30mins, and handles everything effectively. She offers reassurance and competency.
Unfortunately I cant say the same when I try to call... no one ever answers the phone.
If it weren't for Nicky's 5 star service I wouldn't bother with Sleek at all.

Reply from Sleek.com
Poor customer service. Disappointing experience.
Poor customer service. The sales processes and onboarding was swift but once payment was made the response time got longer and now I can't get an answer from the accountant looking at our end of year accounts - I have asked 5 times.
Now worrying about missing a Companies House deadline and guessing corporation tax liability which is due next month!
A very disappointing experience so far. I would not recommend.

Reply from Sleek.com
Very disappointing experience
Very disappointing experience.
Our CorpSec, Kitman Tang, repeatedly forgot to renew our BR — not once, but twice — even though we paid one month before the anniversary date. She was often unresponsive and failed to perform the most basic duties expected from a company secretary.
It became clear that what Sleek cares about is your money, not your compliance. At this price point, you can definitely find a much better and more reliable company secretary.
Their behavior left us feeling like the company might be heading toward bankruptcy, given the disorganization, lack of accountability, and constant service failures.
Our listed “team manager” had already left long ago, yet the information was never updated, leaving our account without proper oversight. When we requested a replacement CorpSec-in-charge due to ongoing issues, guess what, they replace the unresponsive CorpSec-in-charge as our new team manager. so funny. They were slow, unresponsive, and refused to meet reasonable deadlines.
Overall: poor management, lack of accountability, slow handling of urgent matters, and disorganized service. Not recommended.

Reply from Sleek.com
Terrible service
Terrible service, with accountants that are so unreactive it almost seems that they are purposely doing so. I have been trying to get my accounts completed for months and upon chasing the accountant they always come back with 'sincere apologies' and then proceed to give me a new target date for completion which then gets promptly ignored. It's a shocking display of lack of any ownership or professionalism. Deeply frustrating.

Reply from Sleek.com

Reply from Sleek.com
We are using Sleek as our provider for accounting and compliance
We are using Sleek as our provider for over a year now. Super happy with their speed of solving our requirements and their professionalism. Without a doubt - so far our preferred provider out of them all in the UK.

Reply from Sleek.com
Fantastic services for low prices
I found Sleek instantly, via a Google search, as they came up first in the list.
I filled in a simple query form and they rang me very soon after. Joshua was fantastic in helping me with all of my current issues in finding the correct accounting firm as I have been let down with awful information previously. He was extremely knowledgeable and informative about their services and how best they would suit each business.
It's quite daunting changing your accountant and I was most worried about how time consuming it would be.
The process in moving all three businesses over to Sleek has been incredibly efficient and not at all time consuming.
What I liked the most was that Joshua asked me what the instant priority was for each business after moving to Sleek, this was great as I knew they were interested in understanding my business needs and the way I like to work.
I would highly recommend Sleek and their prices were much lower than I was already paying elsewhere, this is very pleasing as they also provide many more services than I already had!

Reply from Sleek.com
Worth Every Penny
Toby and the rest of the team at Sleek have been doing my books for a few years now, and I can't say enough good things about the quality of their work. They're quick, professional, and responsive. As someone who's self-employed, my tax situation can get fairly tricky some years. But the folks at Sleek always help me to lower my tax burden and plan for the next year ahead

Reply from Sleek.com
Had a pleasant experience with Sleek so…
Had a pleasant experience with Sleek so far - from setup to ongoing support. Raj has been very responsive and prompt to all my questions and during the initial setup.
Would recommend for small businesses who are looking for an easy and smooth accounting option

Reply from Sleek.com
Client based service experience
We are 5 years with Sleek on 20th of October 2025.
It is great experience! Thanks to the whole team and Thilagawati that helped with the financial report work!
Amazing adventure and strong partner ✨️

Reply from Sleek.com
I have found Sleek to be extremely…
I have found Sleek to be extremely helpful and prompt in all my dealings with them. Toby Denwood at Sleek has been great.

Reply from Sleek.com
We've had a fantastic experience…
We've had a fantastic experience working with Mohamed. Very professional, always responsive, and genuinely helpful. He takes the time to explain things clearly and makes the whole accounting process smooth and stress-free. We truly appreciate the excellent service from Mohamed and the entire SLEEK team!

Reply from Sleek.com
It's early days
It's early days, around 9 months since we started with Sleek and so far it's been a good experience. Ali has been a great help with our company accounts and payroll taxes. He explains things clearly, responds quickly whenever we have questions and always gives us confidence that everything is in safe hands. We really appreciate his professionalism and the personal attention he gives. Thank you Ali and carry on the good work.

Reply from Sleek.com
Professional experience. excellent thank you Mukesh
Professional experience and very competent staff. Mukesh Aditya Gupta was always helpful and on hand with my accounts.

Reply from Sleek.com
Shaky start
I went to try sleek rather than continue to do my own books and accounts.
Sam the sales rep made many promises that the switchover would be painless and only take 5-6 days to swap everything over from QuickBooks onto Xero.
We set up 2 company accounts with sleek and 3 months in we are still not up to speed and caught up with everything.
This has cost additional monies as we have had to subscribe to QuickBooks for an additional few months as well as pay Sleek.
We are now catching up with one company after me chasing a bit and complaining but the other company is way behind.
I am hoping it will improve soon and these are just teething problems on a new account or we will have to consider moving everything on again which is hard work.
I had a productive chat with Chloe the accountant and the payroll guy but the bookeeper seems to be the issue. Either they are new or just overwhelmed with work and not keeping up.

Reply from Sleek.com
Raj Shah is simply fantastic.
Raj Shah is simply fantastic.
He’s not only highly professional but also genuinely friendly and always ready to help whenever a challenge arises.

Reply from Sleek.com
Excellent accounting support from Sleek
I’ve been working with Amrit Kaur at Sleek for several years now and couldn’t be happier. She’s incredibly responsive, professional, and makes everything easy for a small business like mine - from yearly accounts to payroll and all the details in between. Highly recommend!

Reply from Sleek.com
Great customer experience
Everyone is really helpful and responsive, always looking for ways to make things better for us. Mukesh and Aditya are always proactive to help and find solutions.

Reply from Sleek.com
Wonderful service
Wonderful service by Nicky and her team. We only had the registered office subscription but always received prompt & cooperative response to our queries. Would definitely recommend them.

Reply from Sleek.com
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