Very dependant on the situation, but unfortunately some of the Filipina that have married white men and are living in the UK are finding it's not the dream they thought and are pretty rude. It seems to have stopped, but a while back on the chatbox, some of the discussions in tagalog and visayan were pretty scathing towards the husbands by a few ladies who seem to have disappeared again.
The Filipino workers in the UK tend to be in the cities and often don't integrate and prefer to live in areas and with kabian. Then in the major cities in the Philippines, the expats tend to not integrate a great deal and some have a low view of the locals. In the province, they don't have much option but to integrate.
My missus has family in the UK, and when we over last time she went with them to a local Filipino gathering, and came back a little disheartened at some of the attitude towards the British that was displayed there. When one of the people told her, it's ok stick with your man, he's wealthy, she tried to explain about love and was pretty much laughed at.
When you have two cultures, there is always going to be some difficulty, especially if you can easily stay with your own.
I think also that of the brit-filipina relationships, that only a proportion of them work out, and those seem to be the people that have gone in with their eyes open and have put a lot of effort into the relationship. Also a little bit of luck has a bit to play.