Yes, in order to properly execute the Mortgage Deed, your witness must know you, however they must not be a relative or live in the same property as you, and will need to be present to witness you e-sign the Mortgage Deed. You will need to provide the full name, email address and mobile number of your witness as part of the Mortgage Deed e-sign process. This is so your witness can be sent the Mortgage Deed to e-sign (witness) once you have e-signed your documents.