I was very surprised to see the visa electron sign just about everywhere last year in Manila & Cebu. Take it with you.
The best cards Im told are from Nationwide as there are no charges for withdrawing from ATM`s anywhere in the world plus they give you best rates.

Don't take £'s or traveller's cheques......$$$$$$ only.
Why shouldn`t he take good ole POUNDS?
I always have and never had exchange rate problems.