NO .... u do NOT pay at the VFS office.
You either present them a bankers cheque ... or a receipt from a (recognised) bank
showing them that you have paid the required monies.
see
http://www.vfs-uk-ph.com/applying.aspx
(Where to pay your visa application fee)
..... also, u need a booking for the VFS appointment... which is dependent on
having already paid the fee
