It clinched the deal, valued at £500,000 a year, following the completion of a tender process through the Buying Solutions Framework Agreement.
AccessPlus, which recently paid £530,962 to buy The Print Factory's print management business out of administration, will manage the charity's core print production processes.
In addition, the firm has been tasked with managing promotional merchandise; stationery; creative services; point-of-sale; direct mail; digital assets management; and Edit2print for proofing and ordering products online. AccessPlus will also handle the production of The Children's Society's new magazine.
The tender process was managed by Sue Cousins, The Children's Society's senior procurement officer, and Tom Robin, its senior account manager of marketing.
AccessPlus managing director Steve McKeever said: "This is precisely the sort of client engagement that showcases AccessPlus at its best – delivering across a whole range of added-value services and helping to reduce costs, while improving the quality and effectiveness of communications."
Meanwhile, AccessPlus's parent, Office2office, is today holding its AGM and has issued an interim management statement concerning the period between 1 January and 17 May.
In it, the firm said that the integration of the business process outsourcing division of The Print Factory into AccessPlus was "progressing well", but added that the latter had "traded marginally below management expectations" for the period.
"However, in the past two months, there was a notable resurgence in discretionary marketing expenditure," the statement read. "Initial sales volumes at TPF were encouraging; the contracts of key customers targeted for retention and those which were subject to a ‘change of control' provision under acquisition were successfully secured."
The statement added that the integration of the Newbury branch of office supplies business Martin Luck was "completed and is already cash generative and profitable".
It acknowledged that, while the public sector accounted for about a third of its business and that government-led cuts were inevitable, that it was "well-positioned to support the drive for efficiency and savings".
The statement concluded: "While the economic outlook for many of our private sector customers remains uncertain, the underlying private sector trading trends in the period were reasonably encouraging. We remain confident that we are well-placed to meet the challenges we face."