The form I think is just a formality. I remember when I registered I used our company accountant and my Boss for ID. I think it is a bit silly asking for these types of referee. As for the charges, it is only a one time charge, about £6 if you are sending £1000 (ish) You just tell them how much you want to send in £'s, they tell you how many Peso's that is at the exchange rate for that day and they ask you if that includes the charge or not, it is that simple.
I have been using this method for 4 years (monthly) and have transferred large amounts too like when we bought our house, and never a hiccup or problem, they are very reliable imo.