Sorry Fred but I am getting the impression you may suspect I am being argumentative about this.

I started the thread saying "Legal views on this would be appreciated". That is because, with a legal background, I really want to know from a legal stand point.
If you think I`m wrong then you have every right to check other avenues or answers..No problem as I would do the same..
My kids were born in the UK and are dual nationals..Even before they become dual nationals they were according to the Philippine constitution "Natural born Filipino`s" simply because their Mother is one..
They spent their first 8-10 years in the UK and have been over here with us since.. Their UK PP`s were renewed last year but their Fil PP`s expired about 2 years ago.. If we tried to travel out on their Brit passports,immigration would tell them that they couldn't leave without paying 10 years visa over stay!
The advice given to us years ago holds true..Dual`s need two passports if they want visa free hassles..
I guess I could argue with immigration that they are Filipino`s and never needed a visa but I reckon we would miss the flight.
For me,it ain`t worth it and we are waiting 5 months for their PP renewal appointment before even thinking about travelling.