Chikka is good for sending TO the Philippines.
If your girl can send you a Roaming enabled Smart SIM its even better for sending FROM phils To UK.
For phone calls I use rebtel ( www.rebtel.com )- set up a UK number there so your initial call is often included in free minutes, and you pay the extra at about 8.5p minute. Its saved me LOTS, and is pretty reliable, othe than the odd time I have to dial twice to get a connection.