: Ensure you have every file in the sequence (UK-PD Plan.7z.001, .002, ... up to the final number) in one location.
: Right-click on "UK-PD Plan.7z.001" (the first piece). UK-PD Plan.7z.008
: Select "7-Zip" > "Extract files..." or "Extract Here." 7-Zip will automatically detect the other pieces and reassemble the original file for you. : Ensure you have every file in the sequence (UK-PD Plan