A dangerous convicted sex offender who posed as a single mum looking for an au pair online has been sent back to prison.

Peter Smith was jailed in 2012 after trying to trying to abduct two women three months apart while armed with a knife, and sexually assaulting one of them.

The creep was put on the sex offender register, meaning he had to notify police of his details so he could be monitored.

But when officers visited his home in Braybrooke Road, Desborough, to check on him on March 15 this year they uncovered more disturbing activity.

Smith, 43, had created an alias on website aupair.com pretending to be a single mother called Alex who was looking for an au pair, before moving chats onto WhatsApp where he continued to pose as a woman.

This month he admitted two charges of failing to comply with notification requirements and was jailed for 12 months by magistrates.

Smith was also ordered to pay costs of £85 and a surcharge to fund victim services of £187.