Speaking from his diocese, Rt Revd Chris Edmondson has also echoed the Archbishop of Canterbury, currently in the country, who described the killing as a "revolting lynching".
Farzana Parveen was beaten and stoned to death by her own family outside a Lahore court house on Tuesday for marrying against their wishes in a so called "honor killing".
"We loved each other. We got married on January 7, 2014 and my wife was three months' pregnant," Iqbal told The Associated Press.
"My wife wanted to tell the court that I had not kidnapped her. We were going to the court with our lawyer Mustafa Kharal, and we were near the court when three dozen people suddenly attacked us," he said in a telephone interview from his village.
He said the attackers included his wife's father, two brothers and a woman. "I saw a young woman from my wife's family slapping her. Some people were also beating me... I tried to save my wife's life, but I failed," he said.
Archbishop Justin is believed to have been meeting faith leaders in the city at the time of the incident to discuss the ongoing persecution against the country's Christians.
The Bishop of Bolton, Rt Revd Chris Edmondson, the Church of England's main Episcopal link with Lahore, thinks the Archbishop's presence in the city at the time of the attack may have alerted the international media.
Police in Lahore have reportedly denied claims they stood by as the 25-year-old was being attacked, saying they were not in the area at the time of the incident.
Meanwhile, Pakistani Prime Minister Nawaz Sharif has described the stoning to death of the woman as "totally unacceptable", ordering an immediate investigation into the incident.