radio advertising; rental of radio advertising air time; production and dissemination of advertising matter and radio advertisements; business management and organisation consultancy; business research and forecasting; organization of exhibitions for commercial or advertising purposes; computerised file and record management and data collection; marketing research, marketing studies and modelling for advertising or sales promotion; opinion survey and opinion polling; publicity; syndication of radio programmes; development of programming for radio stations; radio broadcasting; survey and polling services relating to radio broadcasting and radio stations; information services relating to radio; the operation, management and promotion of radio stations