How to email a PDF

[harm_less]

If you have a scanner, follow harm_less's advice above.  If you do not have a scanner then print the document, fill it out by hand and take it to a library or a CAB and ask them to scan it and email it to you as an attachment.  Then you can forward that email to wherever it needs to go.

Our bank won't accept the form if the inputs are handwritten, but the signature is the exception so at that stage a printed copy is required.