gibbon of "independent television news." >> reporter: no sooner had the head of the metropolitan police sir paul stephenson resigned than one of his most senior officers did the same thingç assistant commissioner johnwas head of counter- terrrism. >> the threats we face in the modern world are such that i would never forgive myself if i'm unable to give total commitment to the task of protecting london and the country during this period. i simply cannot let this situation continue. >> reporter: the police authority committee that decides whether police conduct should be investigated met this morning. they were highly critical of john yates' decisions two yearsç ago when allegations of hacking at the "news of the world" resurfaced. at the time, john yates decided there was nothing new to investigate, something he himself recently admitted in an interview had been a pretty crap decision. the committee decided he should be fully investigated, that meant he'd be suspended and john yates decided to resign. >> i have acted with complete integrity and my conscience is clear. i look forward to the future judge-led inquiry where my role will be examined in a proper and calmerçç environme. yates >> reporte