The top-secret heroes of Audley End

Today Audley End House near Saffron Walden is one of the most popular tourist destinations in East Anglia.

But its role during World War Two remained shrouded in secrecy for decades.

Charlotte Rose hears the remarkable story of the elite group of Polish secret agents who were trained there – the Cichociemni.

(Photo credit: Polish Underground Movement Study Trust / colourised by English Heritage)