+1. And the OP will pay this nominal amount because they said they would in their post.
As for 'It is possible that one has arrived to a previous address prior to this as I have recently updated the address on my driver’s licence.', this doesn't make sense because the PCN dated 19 Aug. must be the first one- hence their offer- and the OP's got it without, according to them, having changed their V5C address recently.