It's not always appreciated that anyone can call themselves an 'accountant' even if they have no qualifications or experience! Furthermore many sets of initials after the accountant's name actually mean very little.
Only Chartered Accountants are permitted to use the initials ACA or FCA after their name.

In order to become members of the Institute of Chartered Accountants in England and Wales they have had to spend several years in on-the-job training and have had to pass tough examinations in taxation, company law, accounting principles etc. If they want to set up in practice offering their services to the public they need several more years of experience and they are also required to have adequate insurance to protect clients against professional negligence. In addition, throughout their entire career, they have to demonstrate that they are keeping up to date by attending lectures and reading professional literature.

The Institute requires very high standards of integrity, competence and independence from its members. The reputation of Chartered Accountants as the leading professional accountancy body was hard-earned, and is consequently highly prized and zealously guarded by the Institute and its members.