No further action will be taken against Tory MP Nigel Waterson following his arrest on suspicion of assaulting his teenage son and daughter.
Mr Waterson has been Eastbourne MP for more than 15 years
The Eastbourne MP said it was "a relief but no surprise" when police told him no charges would be brought.
He said he and his family had been "victims of heavy-handed policing and gross media intrusion".
The shadow minister has made complaints to both the Metropolitan Police and the Press Complaints Commission.
In a statement, Mr Waterson said he had been told by the police that no action would be taken against him following his arrest in January.
He said: "I had done nothing wrong and assaulted no-one. I have not been charged with anything.
"We are especially grateful to all those friends and colleagues who have expressed their support.
"We have been very touched."
'No further intrusion'
Mr Waterson, who is shadow minister for pensions and older people, said he and his family had been "victims of heavy-handed policing and gross media intrusion".
He added: "Both matters are now the subject of official complaints to the Metropolitan Police and to the Press Complaints Commission.
"I would ask for no further intrusion into our private family life. I shall be making no further comment on these matters."
A Metropolitan Police spokeswoman confirmed: "A 58-year-old man has been told no further action will be taken."
Mr Waterson, a solicitor, was first elected as MP for Eastbourne in 1992.