What i mean about the 50,000 pesos is about the visa fee,(settlement)because if they had British passport of course you don't need to pay for their visa fee w/c cost less than 50k i guess you need to bring them at the British Embassy located in Taguig, and along w/ their original birth certificate and your marriage contract ,all the documents must be original
Now i wonder if they also need Philippine passport,just keep in touch here and when you wake up,expect loads of reply from your thread,i bet all your queries will be answered
Good luck Ross