 At the launch in 1973 of the London Broadcasting Company, or LBC, the pair were pitched as co-presenters of the breakfast show.The intention was to contrast the urbane Callan with the less couth Street-Porter, whose accents were respectively known to studio engineers as "cut-glass" and "cut-froat".In the event friction between the pair led to an entertaining stream of one-upmanship that became required listening for many Londoners.