The company will become a core element in the society's expanding range of consultancy services and assist in delivering its professionalism programme.
BCS chief executive David Clarke said, "We are delighted to offer organisations that are developing greater professional delivery of their IT capabilities the CPD [continuing professional development] services provided by the i-2-k team.
"i-2-k is able to support an organisation's management-led transformation of its professional capabilities across all areas, using an individual or team coaching approach. This enables clients to implement a transformation quickly and in a more sustainable way.
"Because i-2-k's CPD network is already based around the Skills Framework for the Information Age, this will fit closely with the BCS's existing qualification and career development products."
i-2-k has become a wholly-owned BCS group subsidiary. Marcus Harris continues as managing director of the company.
Harris said, "Over the past six years we have developed an innovative framework for managing and delivering CPD within IT departments. This process ensures IT professionals develop soft, process, commercial and technical skills in equal measure which are now required to meet the needs of our rapidly changing profession."