Bell takes over from last year's chairman, Lord Putt-nam, and will head a panel of 12. The PHD Group UK chairman, Tess Alps, and the Walker Media partner Phil Georgiadis will represent media on this year's panel, while Glue London's managing director, Mark Cridge, will provide the digital insight.
On the creative agency side, Abbott Mead Vickers BBDO's new chief executive, Farah Ramzan Golant, will be judging alongside J. Walter Thompson's creative director, Mike McKenna; Ogilvy & Mather's executive creative director, Malcolm Poynton, and WWAV Rapp Collins' executive director and head of creative, Ian Haworth.
They will be joined by the COI Communications chief executive, Alan Bishop; Honda's UK head of marketing, Simon Thompson; Chris Moss, the chief executive of The Number 118 118, and Lever Faberge's European brand manager for Pulse, Margaret Jobling.
The BOBs ceremony will take place next year in London on 7 February.
The categories include Best Large Creative Agency, Best Small to Medium Creative Agency, Best Media Agency and Best Digital Agency.
Last year, TBWA\London won three BOBs, with Trevor Beattie taking the Best Creative Director and Best Creative Team awards (the latter with Bil Bungay) and Matt Shepherd-Smith named Best Account Handler.