A fantasist who claimed he worked for MI5 has been sentenced to a minimum of 16 years for the murder of his teenaged girlfriend.

Part-time photographer Stuart Adcock, 34, left model Rebecca Rice, 18, to die in a pool of blood after knifing her ten times at the flat they shared in Pettistree, Suffolk, last August.

The court was told insurance worker Adcock, who also ran the SPJ Models photographic agency, in Benfleet, launched a frenzied attack on the teenager, after finding she wanted to leave him.

Prosecutor Karim Khalil told Norwich Crown Court Rebecca had become unhappy at Adcock's jealousy and possessiveness and planned to move out. Adcock found out and decided not to let her to go.

"In a frenzied attack, he knifed her many times in the kitchen of their flat and left her to bleed to death," Mr Khalil added.

Scheming Adcock then inflicted a knife-wound on himself in an attempt to blame Rebecca for the incident.

The killer had a disturbing history with women, the court heard. Sometimes "charming and charismatic" towards women, he was also "inclined to become possessive, jealous and domineering".

As a photographer, he claimed to have had work published in lad-mags, Max Power, Nuts and Zoo, but none of the publications had heard of him.

He met Rebecca while working as a photographer.

The court heard Adcock claimed he was depressed after seeing the aftermath of the London bombings in July, 2005, while working for MI5.

Graham Parkins, QC, mitigating, said: "We may never know how it started, what caused him to react or act in the way that he did. It is bizarre in the extreme."

Adcock admitted murder earlier this month and was in court for sentencing.

Judge Peter Jacobs told him: "This was a frenzied attack in which you were completely out of control."