The appointment follows a five-way pitch and could be extended into a second phase lasting for six months.
The body is made up of The City of London local authority, The London Borough of Tower Hamlets, the London Borough of Southwark, local community groups, major landowners and employers.
It aims to rejuvenate the riverside area between London Bridge and Tower Bridge.
The north bank of the Thames development project, entitled Tower Gateway, will be governed by Tower Hamlets and the City of London authority, and the South Bank development project, entitled the London Bridge Gateway, will be governed by Southwark Council.
Upward Curve is devising PR strategy, producing promotional literature and handling media relations work.