"Fifty-year-old documents that have finally been transferred to the National Archive show that bonfires were built behind diplomatic missions across the globe as the purge – codenamed Operation Legacy – accompanied the handover of each
“Fifty-year-old documents that have finally been transferred to the National Archive show that bonfires were built behind diplomatic missions across the globe as the purge – codenamed Operation Legacy – accompanied the handover of each colony.”
See the full article: Revealed: the bonfire of papers at the end of Empire – DG was a code word to indicate papers were for British officers of European descent only (Guardian, lnk)