k1wi:
Does anyone know/remember if the forms had a unique identifier to them or were they totally anonymous? I had read some voters claimed that they never received their envelopes. If the forms don't have a UID then there would be very little way to identify electoral fraud...
They had a unique QR code.
The QR code on the voting paper provides a number unique to each individual and voting paper. The information is provided by the Electoral Commission’s Enrolment Services team. The number can only be traced back to a person through information held by Enrolment Services – this information is not held by the referendum vote processing team. An action to trace a voting paper back to a person is only undertaken if there is some discrepancy with the voting paper, and even then, tracing is only permitted by the Returning Officer or processing staff who've each signed secrecy declarations.