Bulgarian Deyan Valentinov attends his trial at a court in Santa Cruz de Tenerife in the Canary Islands, Spain, Monday, Feb. 18, 2013. The trial opened Monday of a Bulgarian man who allegedly beheaded a British woman with a carving knife in a random attack inside a supermarket on the Spanish resort island of Tenerife in the Canary Islands. Prosecutors demand he should be sentenced to 20 years in a mental asylum because he has chronic paranoid schizophrenia. (AP Photo/Andres Gutierrez)

The jury in the trial of a man accused of decapitating a grandmother originally from Norwich on the holiday island of Tenerife has retired to consider its verdict.

Jennifer Mills-Westley.

Bulgarian man Deyan Deyanov is standing trial at the Provincial Court in Santa Cruz de Tenerife.

Deyanov, 29, denies murdering grandmother-of-five Jennifer Mills-Westley in the popular resort of Los Cristianos in the Canary Islands, Spain, on May 13 2011.

The 60-year-old, a retired council worker originally from Hellesdon, was repeatedly stabbed and then beheaded while she was in a Chinese-owned general store near the beach.

Prosecutor Angel Garcia Rodriguez is asking for Deyanov to be sentenced to 20 years in a psychiatric unit.

During his trial, Deyanov said he did not recognise himself in “tough” CCTV footage of the attack and had no recollection of ever living on the island.

He has been diagnosed with acute paranoid schizophrenia and claims voices have told him he is an “angel of Jesus Christ” sent to create a new Jerusalem.

Francisco Beltran, for the defence, asked the nine jurors to see his client as a “sick man” and asked for an acquittal.

But he said that, if they find him guilty, they should sentence him to 15 years in a psychiatric unit.

The jury must determine whether Deyanov was the attacker, whether he took Ms Mills-Westley by surprise and if he was criminally responsible for his actions.