Barcode PPI LabelsPostal costs can be a great expense so why not invest in some Royal Mail PPI Labels. Savings can be made with your Royal Mail Business Account using PPI Barcoded Labels. We supply these on a Roll of 500 76 x 38mm. To use PPI labels you need to have the appropriate account with the Royal Mail. You will need to create your own artwork using the Royal Mail artwork generator and email your jpeg or png file to us after placing your order.