Former News of the World chief reporter Neville Thurlbeck has been released on bail tonight pending further enquiries.
He was arrested earlier in central London by detectives investigating phone-hacking at News International, Scotland Yard said.
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The discovery was made in Essex.
Between April and June, some 40% of calls made to Action Fraud were hung up before they were answered.
GPs will be given convertible standing desks and activity trackers and patients will be asked how they found the consultation.