Cherie Blair has lodged a claim over the hacking of her phone, her lawyers said on Wednesday night.
The former prime minister's wife is set to sue News Group Newspapers over claims her phone was hacked.
A statement released by Graham Atkins, of Atkins Thomson, said: "I can confirm that we have issued a claim on behalf of Cherie Blair in relation to the unlawful interception of her voicemails.
"I will not be commenting any further at this time."