I will take your story with a very big grain of salt kasi I entered Pinas December 2011 and Feb 2012. so your story, which is 2nd and 3rd hand information, does not jive with what i had personally experienced early this year. As for your friend, tama nga hinala ko na hindi siya citizen.
If ever totoo yan, hindi magtatamggal yan. Dati nag issue ng mandate ang Phil Embassy sa Australia. Lahat daw ng pinoys sa australia dapat mag pa renew ng passport sa Canberra or Sydney LANG.
At that time hindi pa kami citizen at lilipad kami pa ibang bansa in a month. so we had to FLY to Canberra, RENTed a place to stay, SPENT on food, para lang maka pag renew. pero NAGREKLAMO kami. pahirapan ba ang pinoy. very unreasonable.
in a few weeks they changed the rules. so kung totoo man lang sabi mo sis, magbabago din yan. baka naman for Brit Pinoys lang din yan. i'm trying to be Open Minded here.
pero kausap ko lang Travel Agent ko sa Manila, and they maintained their stance.
i browsed through the website of the Philippine embassy in UK/London, and it says there that British passport holders (pinoys) "do not need a visa if their intended stay in the Philippines will not exceed 21 days. British passport holders availing themselves of the 21-day no visa policy should have a passport valid for at least six months beyond their intended stay in the Philippines and a plane or ship ticket valid for onward or return journey to their country of origin or next country of destination.
It's best that you personally inquire about this from the Philippine Embassy in the UK instead of shouting out in a forum. also ask for a copy of the Amendment or the Mandate to add validity to your claim. this amendment hindi ko makita ibang website.