Since last year, the European organization FENStatS has been awarding an accreditation with the name European Accredited Statistician (EAStat).
As a national organisation for statistics we participate in this accreditation.
In order to be accredited as a statistician, a degree (MSc level) in statistics or equivalent and at least five years of professional experience are required. There is an agreement with ASA and RSA for mutual recognition of accreditations.
An application for accreditation costs 120 euros.
You will also find further information on the page of FENStatS and the statutes for accreditation can be found here (PDF in English).