Fewer than one in five schools are teaching students about inspirational British victories such as Agincourt, Waterloo and Trafalgar, a study has found.

The report discovered that while almost all pupils are being informed about the Transatlantic Slave Trade and the First World War, children are by and large being left in the dark about other history-changing moments.

Chief among these are the battles of Waterloo and Trafalgar, with only 11 per cent of UK secondary schools teaching the details to their students, despite their vital roles in the history of the British Empire.

The Battle of Trafalgar saw the Royal Navy defeat the French and Spanish fleets in 1805, confirming British supremacy of the seas, while the Battle of Waterloo in 1815 marked the end of the Napoleonic Wars and the rise of British Empire.

Meanwhile only 18 per cent of students are being taught about the Battle of Agincourt in the Hundreds Years' War, which confirmed Henry V as one of England's greatest kings.