The updated news is that tourist visa free privilege for British Citizens will be increased from the current 21 days to a new stay of 30 days.
I think this is from 1 August 2013
The next level up is for a 59 day visa which needs to be paid for.
This can be secured upon arrival at the immigration office in the airport or can be secured beforehand from the Philippine Embassy in London.
Either by post or personal appearance.
Take a look here Cheekee for details of the visa application form.
Have a special look at question 16