My companies ops manual says that any private flying is logged as flight time but not as duty time. It doesn't say if it's counted towards the continuous days flying though....
Harry Cooper - a CPL only needs to start logging flight & duty times from the first day they undertake a flight 'for hire or reward' - in my case I waited almost a year in between (was meat bombing instead - all private & no CAO48 to worry about).
UTR
PS What happens if you get busted? I've noticed a couple of operators round my way who happily fly 7 days a week and are on duty from 9 til 5 daily...