Did the M&S pyjama killer drive ANOTHER of her husbands to his death?

Did the M&S pyjama killer drive ANOTHER of her husbands to his death?
Did the M&S pyjama killer drive ANOTHER of her husbands to his death?

During the final weeks of his life, those who knew RAF chief engineer Alan Warrender watched him become a shadow of his former self. If he had always been partial to the odd glass of whisky, then by the spring of 1993 he was drinking it in alarming quantities. The 43-year-old father of four was in despair, struggling with spiralling debts and chased down by loan sharks.

But what pushed him over the edge in April that year was the discovery that his wife, Penny, was cheating on him.

While Alan took his own life days after finding out about her affair, Penny went on to marry her lover and two decades later, in a crime that shocked the nation, stabbed him to death in cold blood at their home in Somerset while he was on the phone to the emergency services.

Alan and Beverley Warrender were married (pictured)  before he was with Penelope Jackson and later took his own life

Alan and Beverley Warrender were married (pictured)  before he was with Penelope Jackson and later took his own life 

Now, a fortnight after Penelope Jackson, 66, was jailed for life for murdering retired Army officer David Jackson, the Mail can reveal the untold story of the other husband whose life was ultimately destroyed by the so-called 'pyjama killer'.

'There's no question that the affair drove him to his death,' says one of Alan's relatives, a family member so intimidated by Penny that even though the killer is behind bars, she still wishes to remain anonymous.

'After what she did to him and his family before she went on to murder her next husband, she should never be released from prison,' says the relative. 'She is a ruthless, greedy, angry woman. She is a danger to society.'

At the time Alan and Penny met at RAF St Athan in the Vale of Glamorgan in South Wales in the late 1980s, Penny Rothwell, as she was then, was just emerging from her second short-lived marriage to another MoD worker, Tony Rothwell. Alan was married to his first wife, Beverley, a WRAF servicewoman and former steward in the mess at the same base.

The Jacksons were married. Jackson killed her fourth husband (left) after a row

The Jacksons were married. Jackson killed her fourth husband (left) after a row 

'Alan and Beverley had a fabulous life together,' says the relative. 'They really were soulmates. They met in the mess when they were barely in their 20s and they pretty much eloped with a week's honeymoon in Devon. Their wedding was a very small affair, just them and a couple of witnesses.'

Alan and Beverley got married in 1971 in St Austell, close to the RAF station at St Mawgan in Newquay where they were then based. The couple went on to have two daughters and then adopted a son.

After living in Cornwall they spent time at RAF Akrotiri in Cyprus and RAF Bruggen in Germany as they moved around Europe according to Alan's job. They took holidays in the Norfolk Broads, where Alan shared his passion for boats and fishing with his children.

By the mid-1980s, however, they'd returned to Beverley's native Wales and were once again living in RAF accommodation close to RAF St Athan where mother-of-two Penny was also working as an MoD budget manager.

Mr Warrender was married to his first wife, Beverley, a WRAF servicewoman and former steward in the mess at the same base when he met Jackson. Soon he was having an affair with Jackson and when his wife died from breast cancer he moved in with her and the two married. Pictured: The moment Jackson was arrested for killing her fourth husband earlier this year

Mr Warrender was married to his first wife, Beverley, a WRAF servicewoman and former steward in the mess at the same base when he met Jackson. Soon he was having an affair with Jackson and when his wife died from breast cancer he moved in with her and the two married. Pictured: The moment Jackson was arrested for killing her fourth husband earlier this year

Soon, says the relative, Beverley was remarking that her husband had become distant towards her. 'She said to me: 'If I didn't know any better, I'd say he was having an affair',' says the relative. 'Alan just wasn't the same man that he'd been before. He started dressing differently and staying out late. We all knew something was going on.'

Tragically, the realisation that her husband of 16 years was being unfaithful coincided with Beverley's discovery, in early 1987, that she had breast cancer. While she underwent surgery, chemotherapy and radiotherapy, doctors broke the news that the cancer had spread throughout her body. According to the relative, she died 'broken-hearted' in August that year, aged 36.

'She knew Alan was seeing someone else but by the end she was too sick to think about it any more. She was so tired. She said to me: 'I just want to go to sleep'.'

While Jackson was Alan's second wife, he was her third, and penultimate, husband. Pictured: Jackson's mugshot after killing fourth husband

While Jackson was Alan's second wife, he was her third, and penultimate, husband. Pictured: Jackson's mugshot after killing fourth husband

Within weeks, Alan and Penny had moved in together and, five months later in January 1988, they married. While Penny was Alan's second wife, he was her third, and penultimate, husband.

'It was as if Beverley had never existed,' says the relative. 'He had been such a family man when he was with Beverley, but Penny had no interest in his children with Beverley.'

Within months of their wedding, the girls were sent away to boarding school while the son Alan and Beverley had adopted eventually went to live with Beverley's family after Penny and Alan tried to return him to the care system.

'He was going to be sent back to a children's home,' says the relative, 'but there was no way that we were going to let that happen.'

By 1990, Penny and Alan were living in a smart detached house in Grantham, Lincolnshire, and Alan was working at RAF Swanton Morley in Norfolk. In October 1990, Penny, already a mother of two from her first marriage, gave birth to their daughter, Isabelle. Her two daughters from her first marriage were not living with her at the time.

But according to the relative: 'Things were not going well for Alan. He couldn't afford the life they were leading. When he was with Beverley, they lived in furnished married quarters but now he and Penny had a smart house and he was driving around in a BMW. Penny was very extravagant in her tastes. He started borrowing money to keep up with it all.'

Ironically, as the debts mounted and Alan became increasingly desperate, he turned to his first wife's family for help.

But while his former in-laws knew he had financial troubles, they had no idea his second wife was also now cheating on him. Pictured: Jackson after her arrest

But while his former in-laws knew he had financial troubles, they had no idea his second wife was also now cheating on him. Pictured: Jackson after her arrest 

'He said he needed money for the grandchildren,' says the relative. 'Beverley's parents took out loans to give him the money, even though they were angry with him for cheating on their daughter. But they couldn't understand where all the money was going. It was never paid back.

None of us had ever seen Alan like that. He used to be a man who really loved life. When he was with Beverley, he was so happy-go-lucky but once he was with Penny, it was like he was a broken man.'

As money became tighter, Alan quit the RAF and went to work in Saudi Arabia.

But while his former in-laws knew he had financial troubles, they had no idea his second wife was also now cheating on him. While Alan was away on his four-month

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