Accountants in Cardiff & Aberdare

Welcome to ktsowensthomas

A 3-dimensional approach that signals the end of flat accounting...

What sets us apart from your regular firm of conventional accountants? Well for a start, although we offer all the usual services, we’ve no respect for the boundaries of the profession. We prefer to go well beyond traditional accounting practices by first getting under the skin of a business - and then helping it discover new and realistic possibilities for growth that will more than repay our fee.

ktsowensthomas is a leading firm of independent accountants, taxation and business advisors based in south Wales. With a head office in Cardiff and regional offices in Aberdare and Swansea, the firm advises clients in both the private and public sector, as well as individuals in a personal and business capacity. Led by a team of directors with local, national and international experience and staffed by experts across a number of sectors, our team applies our three dimensional approach to exceed client expectations.

Our expert accountants have the technical skills and commercial know-how to advise clients on a range of needs - audit and assurance, business consultancy, corporate finance and tax planning, see our services.

If you are starting or growing your business or well established and just need to see things from a new financial perspective we want to hear from you.

Arrange to chat or meet with us:
Email: Request a Chat
Phone us: +44 02920 829000.

Regulatory Notice
The following information is provided pursuant to the Provision of Services Regulations 2009 (SI2009/2999). For further information please refer to our General Terms & Conditions of Business and, for existing clients, your letter of engagement (both available on request via

KTS Owens Thomas Limited is a limited company registered in England and Wales (Company number 4777212) We are a member of the Institute of Chartered Accountants in England and Wales and our conduct is subject to its Code of Ethics which can be found at This is available in English.

KTS Owens Thomas Limited is a member firm of DFK International (DFK), a worldwide association of independent firms.  Neither DFK nor any of its member firms has any liability for each other’s acts or omissions.  Professional services are provided by member firms or their subsidiaries and not by DFK.

Audit Registration
We are registered to carry on audit work in the UK and Ireland and regulated for a range of investment business activities by the Institute of Chartered Accountants in England and Wales. Details about our audit registration can be viewed at under reference number C001021321 and for Ireland under reference number EWC001021321

The professional rules applicable to our audit work in the UK are the Audit Regulations which can be found at In addition there are the International Standards on Auditing (UK and Ireland) at

In carrying out our audit work we are subject to the Code of Ethics referred to in the paragraph above. With respect to audit work we are also subject to the APB Ethical Standards found at These are available in English.

General practice registration
Details about our registration as practicing members of the Institute of Chartered Accountants in England and Wales can be viewed at using our firm name and location.

Professional Indemnity Insurance
Details of our Professional indemnity insurance is available on request. The territorial coverage is worldwide excluding professional business carried out from an office in the US or Canada and excludes any action for a claim brought in any court in the US or Canada.


DFK UK & IrelandDFK International