A Conservative MP who bombarded two young women with lewd text messages has been cleared of wrongdoing by the parliamentary standards watchdog.

Andrew Griffiths, 48, a married father, resigned as minister for small business last July after it was revealed he had sent 2,000 sexual texts to Imogen Treharne, a barmaid, and her friend in just 21 days, weeks after the birth of his first child.

The watchdog said it had not found evidence that the Burton and Uttoxeter MP sent the messages while engaged in parliamentary activities and allegations that he breached the House of Commons code of conduct were not upheld.

Griffiths is said to have bombarded Treharne, 28, and her friend with messages in which he referred to himself as “Daddy” and asked for explicit photos.

A resolution letter said: “Mr Griffiths’ conduct has undoubtedly damaged his own reputation, as well as his health and family relationships. However damaging these events have been for Mr Griffths personally, I am not persuaded that the texts he exchanged with the two women have caused significant damage to the reputation of the House of Commons as a whole, or of its Members generally.”

Griffiths said: “I’m grateful to the commissioner for dismissing this complaint. She has confirmed that I was suffering from a mental health-related breakdown at the time which led to my actions.

“Mental health can affect anyone in any walk of life. I am now fitter and healthier and focused on representing my constituents.”

Griffiths was first elected in 2010 and was appointed to the small business role in January 2018, having been a government whip from July 2016.

Among his activities as a minister, he led the government’s response to findings of the Hampton-Alexander review into gender equality at the top of business. He also launched a campaign to encourage more fathers to take paternity leave.