Our Professional Bodies

charted tax

Our CIOT membership and the benefits for our clients

Cox Costello South is a member of the Chartered Institute of Taxation (CIOT), the leading professional body in the UK for tax advisors dealing with all of the many aspects of taxation.

The CIOT’s primary purpose is to promote education in taxation with a key aim of achieving a more efficient, less complex tax system for all.

In addition, the joint Professional Standards Committee of the Institute and the Association of Taxation Technicians contributes to the achievement of CIOT’s charitable aim of maintaining an educational and ethical framework of the highest standard aiming to produce tax advisers of the best quality for the general public. The guidance developed by Professional Standards upholds the high professional and ethical standards required of CIOT members.

The ultimate benefit to clients of our CIOT membership is therefore:

  • The simplification your own tax affairs and related advisory work in accordance with CIOT standards and best practice
  • The most efficient use of our advisors’ time in dealing with your affairs
  • Services of the highest professional and ethical standards
  • More value from the fees you pay us for professional tax advisory services.

At Cox Costello & Horne we are fully committed to the on-going education of our advisors and support our staff in gaining CIOT qualifications. Membership of the CIOT is by examination; and the resulting qualification is nationally recognized as the gold standard of UK taxation education.


Cox Costello & Horne is a member of the Institute of Chartered Accountants in England & Wales (ICAEW), a world leading professional membership organisation that promotes, develops and supports over 147,000 chartered accountants worldwide. They provide qualifications and professional development, share knowledge, insight and technical expertise, and protect the quality and integrity of the accountancy and finance profession.

As leaders in accountancy, finance and business, members have the knowledge, skills and commitment to maintain the highest professional standards and integrity. Together we contribute to the success of individuals, organisations, communities and economies around the world.

The ICAEW offers training and qualifications to a broad range of professionals, helping to foster the leadership, commercial, finance and technical capabilities that are fundamental to driving careers forward and supporting the long-term success of a business.

At Cox Costello & Horne we support and encourage those staff who wish to achieve the ICAEW chartered accountancy qualification, the ACA, which is one of the most advanced learning and professional development programmes available. Its integrated components provide an in-depth understanding across accountancy, finance and business, which helps build the technical knowledge, professional skills and practical experience needed to become an ICAEW Chartered Accountant.

Additionally, the ICAEW provides post-qualification professional development and top-class training specialists deliver engaging, practical training which gives our qualified staff the applied knowledge that has a tangible impact on business performance.


AAT is a globally respected accounting qualification body for accounting technicians. There are four levels of AAT suitable for individuals ranging from those with no previous experience to those who have a good understanding of finance and wish to progress towards becoming Chartered. AAT qualifications are industry-respected, providing the technical foundation to excel in an accounting career and at Cox Costello & Horne we encourage and support those staff wishing to progress their careers in accountancy.