In comparison to London I would find all those places in the Philippines much safer.
London has had numerous terrorism incidents of late so if you are comfortable there you will find the Philippines a breeze. - tommomelbourne
People should feel excited about their trip. If a place causes you angst, makes you worry, dread, fearful, it may not be the place for you.
There are enough news and travel advisories about the philippines that can cause you angst. Those who know the country may try to reassure you but may not be enough because that is all you have, 2nd and 3rd hand pros and cons. -al22tecc
Siargao is one of, if not THE, safest place in the Philippines. The only thing u will worry about while u are there is how u explain to your boss and family that u have decided to live there forever-Bungchow