Officers from Operation Yewtree - the investigation of sex abuse claims surrounding Jimmy Savile and others - arrested the suspect at 7.15am today at an address in Cambridge.
A Scotland Yard spokesman said a man was arrested on suspicion of sexual offences and has been taken into custody locally.
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Half of teachers said the number of youngsters dealing with difficulties, such as depression, has risen compared to two years ago.
David Cameron will use a speech today to set out plans for patients to be able to access hospital services seven days a week.
The young Labour supporter seen celebrating an impromptu photo with Ed Miliband has defended her desire for an early campaign selfie.