
Callcredit is part of the Skipton Information Group that owns EuroDirect and GMAP Consulting.
ABA had carried out project work for the firm, but the hire consolidates most of Callcredit's marketing into a single agency.
Work will include B2B email marketing and responsive online advertising, as well as the redesign of all promotional material and Callcredit's business and consumer websites.
Callcredit is one of three major credit reference agencies in the UK, alongside Experian and Equifax. Last month, it acquired online payments processing firm Legatio Technologies.