Bell Pottinger Wired will focus on delivering content-led campaigns for existing Bell Pottinger clients as well as new business.
The shop will be led by the head of content, Claire Southeard, and the head of digital, James Thomlinson.
It will design websites and apps for mobile and social media, as well as offering creative services such as filming, editing and copywriting.
Other services include search advertising (covering SEO and pay-per-click) and developing social media campaigns. These services will sit alongside a digital PR offer.
James Henderson, the chief executive of Bell Pottinger Private, said: "With the boundaries between owned, earned and paid media being more blurred than ever before, now is the right time for an agency like this."