thank you rusty for the advice.
regarding my son,my husband called the philippine consulate in london regarding my son.they advice him to get him a filipino passport then get him a UK visa and looking at the time and money,we decided to go for the advice above as it is lesser in terms of money and time as my husband needs to come here and apply for the passport personally at the embassy and calculating the visa fees and his travel to come here again to do it is much the same but i think if i can remember it correctly,we need to wait for i think 6 months before the passport will be issued.i m sure but if there's any other advice on this matter,i would really appreciate it.