OPG Forms For security reasons, please request the forms below via e-mail: opgservices@xafinitypaymaster.com Standing Order Request / Amendment / Cancellation (used to set up a new Standing Order or amend or cancel an existing one). Application for OPG Account Title Change Application for Closing an OPG Account Revocation of Payable Order (used to stop payable orders). Payable Order Enquiry (used to enquire if a payable order is paid / unpaid). Receivable Order Masterline Service Registration Form Masterline Mailbox Registration Form Bank of England BACS Recall Request for Payment by Transfer   © Crown Copyright