Plenty of Fish . com is a FREE dating site that has worldwide coverage...with a very good UK section, forums etc.
There are also quite a few UK resident Filipinas on it, if they are what take his fancy.
http://www.pof.com
A good easy-to-use site.
Sites like DateinAsia, although perfectly good, and free, can be quite challenging for a newbie. Lots of nice ladies (and ladyboys), but also many looking for financial support.