Rare writings by codebreaker Alan Turing will remain in the UK after a request to take them abroad was denied.

The documents relate to the Delilah project during WWII, which focused on developing an encryption system for military operations.

Turing worked at the National Physical Laboratory in Teddington, where he continued his groundbreaking research after the war.

The documents were saved by UK-based buyers and will go on display at King’s College.