Another suggestion that people seemed to have missed is a pre-paid debit card.
Basically, its a Chip and PIN Maestro debit card, where you can withdraw funds and can be re-loaded instantly via the internet, post office or paypoint. Theres no overdraft or direct debits, so its ideal for holidays or you can send the card to your loved one in the Philippines and just reload the card as required.
I've used one for a 6 months, and its handy on holiday, no need to carry all that cash, and if the card is lost or stolen, you'll get a replacement.
LastMinute Travelcash is the one I use, or heres a list:
http://www.moneysupermarket.com/card...eature=Prepaid