BOSSES at Hampshire's D-Day museum were forced to remove a range of commemorative Union flag postcards after an eagle-eyed visitor noticed mistakes with the markings.

The postcards have been taken off the shelves at the Portsmouth museum after a mistake was spotted in the diagonal lines on the flag.

The red diagonal lines were in the centre of the white ones on the museum's postcards.

A visitor told staff at the museum these lines should actually be slightly lower down on one side and higher up on the other.

The museum has contacted its supplier but hundreds of visitors have already bought the postcards as souvenirs at the museum and other outlets.

Museums commercial manager David Evans said: ''A customer complained about one of the lines. She was an expert about to give a talk on the flag. We will make sure we get it right next time.''