Tributes have been paid to Ann Mitchell - one of the last of a World War Two code-breaking team at Bletchley Park - who has died aged 97.

Mrs Mitchell, who deciphered German codes at the British code-breaking centre from 1943, died at an Edinburgh care home on Monday.

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When Mrs Mitchell was called up for war service in 1943 in the Foreign Office, "she had no idea what kind of job she was accepting", her son said.

The Oxford mathematics graduate spent the next two years at Bletchley Park in Buckinghamshire, cracking the secret Enigma messages sent by the Germans.

Later in life, her pioneering research into the effects of divorce on children influenced changes to Scots law.