WATCH: Futuristic vision of new carriers in Portsmouth Harbour

Detail from an exact replica of Lord Nelson's diamond Chelengk jewels. Picture:Andrew Matthews/Press Association

Replica of Nelson’s stolen jewel on display

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Stunning computer graphics show how the Royal Navy’s two giant new aircraft carriers will look in Portsmouth.

The simulated video produced by the Ministry of Defence was issued as defence secretary Michael Fallon visited the naval base to see work on the £120m project to house HMS Queen Elizabeth and HMS Prince of Wales.