The London-based marketing firm behind Harry Potter author JK Rowling and The Man Booker Prize has beaten off competition from a string of Birmingham agencies to win the contract for the new Library of Birmingham.

Colman Getty has secured the £292,000 three-year contract to oversee the promotion of the £189million library in Centenary Square, replacing Birmingham's S&X Media, who had held the contract for the previous three years.

Other Birmingham agencies, including Rewired, are known to have pitched for the lucrative contract.

Colman Getty, whose clients also include the Saatchi Gallery and Cheltenham Literary Festival, has been asked to draw up a ‘high impact regional, national and international campaign’ for the new library which is due to open in 2013.

Brian Gambles, assistant director of culture at Birmingham City Council, thanked S&X Media for its work on the Library through its design and early construction phase.

He said: “They set the bar very high and ultimately it was a very close decision as to who would be awarded the new contract. S&X’s creativity, enthusiasm and insightful input have proven invaluable.”

The council invited bids of up to £350,000 for the contract, which includes organising a major launch campaign and event in 2013.

Liz Sich, managing director of Colman Getty, said: "The launch of the new library will be a wonderful opportunity to celebrate Birmingham’s achievements on a local, national and international stage.”