The Aegis-owned agency partnered with the specialist sponsorship agency IMG in a pitch against undisclosed agencies handled by the AAR.
Vizeum will work on media strategy, while the sports specialist IMG will create sponsorship activation on the account. It is Vizeum's first appointment to the BT roster.
BT is a first-tier domestic sponsor of the Olympics and the official communications services partner. Tier-one sponsors donate around £40 million and are expected to get publicity worth up to £80 million from their connection with the Games and the use of the 2012 logo on ads with the Olympic rings.
BT's £75 million media planning and buying account moved in February to Maxus, which is unaffected by Vizeum's appointment.
This article was first published on campaignlive.co.uk