GB News is urging Royal Mail to investigate its systems after our investigation found some stamps are being deemed “counterfeit” by Royal Mail, while other stamps from the same book are not.

Royal Mail yesterday told ministers it would investigate problems with new barcoded stamps to try and “ascertain the source of the problem” amid fears customers are wrongly being fined to get letters.

This follows GB News reporter Jessica Sheldon's investigation into the counterfeit Royal Mail stamps.