Stephen Port allegedly invited the men back to his flat in Barking, East London, where he gave them fatal doses of the party drug GHB, known as liquid ecstasy. The softly-spoken 40-year-old is accused of having sex with the victims while they were unconscious before dumping their bodies near his flat. All four met their deaths in the early hours of the morning over a 15-month period (bottom left). Police had previously ruled out foul play on two of the men, found dead within a month of each other in the same East London churchyard. Detectives began the hunt for a serial killer only last week after they finally linked the deaths. Port is pictured in two childhood photographs (top left and centre) and in a pose posted online (right).

Chinese president Xi Jinping has touched down in the UK as Britain rolled out the red carpet for the four-day state visit. Mr Xi and his wife Peng Liyuan will stay as guests of the Queen at Buckingham Palace, attend a glittering state banquet and dine with Prime Minister David Cameron at Chequers during their high profile stay. The Chinese president landed at Heathrow where he was presented with a bouquet of flowers by the welcoming party, which included Foreign Secretary Philip Hammond.

Retired Chinese basketball player Yao Ming met the 6ft 3in Duke of Cambridge (above) at King's College London to continue their campaign to end the trade in ivory and other products. William used a prime-time slot live on Chinese TV (centre) to plead for an end to traditional medicines made from endangered animals - for the sake of his children George and Charlotte. In a speech live on China's most watched TV station, he delivered an impassioned plea for an end to illegal wildlife poaching and claimed China could 'lead the world' saving animals from extinction.

Approaching 80, the former Italian prime minister has led a phenomenal life. From almost nothing, he built a vast business in Italy and a media conglomerate of television channels.He then went into politics, launched his own party and within months was Italy's prime minister, a position he held for a record-breaking total of more than ten years over three terms. But it is his love life and the Bunga Bunga scandal that made massive headlines after he was accused of an affair with an underage prostitute called Ruby, left. It came after he separated from his first wife Veronica Lario, right, and is now dating Francesca Pascale.

ALISON BOSHOFF: With her endless legs and lithe physique, how does 45-year-old Katie Derham manages to hold back the years? We can reveal that despite her wholesome, country wife image (she lives in West Sussex with her husband John Vincent, a co-founder of the restaurant chain Leon, and their two daughters Natasha, 15, and Eleanor, ten, plus a dog and chickens) her beauty, diet and exercise regime is strictly that of a body-obsessed A-lister.

While working as an aide to the Duchess of York (inset), Jane Andrews often found herself visiting high-end stores such as Harrods to shop for the royal. But having been freed from prison after serving 14 years for the murder of her millionaire boyfriend the 48-year-old has now been pictured hunting for bargains at her local charity shop (right). The 'Fatal Attraction' killer - who stabbed and beat to death businessman Tom Cressman with a cricket bat after he refused to marry her - was released on licence in the summer.

TV chef Jamie Oliver today called for sugar content to be shown in teaspoons on fizzy drinks as he urged David Cameron to be 'brave' and stand up to junk food bosses. Giving evidence to the health select committee, he said successive governments had let down generations of adults and children by not standing up to big business to improve diet. He produced bottles of Pepsi, Ribena and Lemon Fanta with the labels doctored to show how many teaspoons of sugar they contain - in the case of Pepsi up to 14 spoons (inset). He also called for a ban on energy drinks in lunchboxes, junk food adverts to be allowed only after the watershed, more cookery lessons in schools, and curbs on junk food shops near schools.

Ever since my mother died a month ago, I have been solely responsible for my 89-year-old father, writes GRANT FELLER. It has left me leading a split life: that of a loving husband, provider and father to my two children, who are 15 and 17, and also carer to my increasingly frail and grieving father. Except my role as carer has, all too often, come first. It's taken a hell of a toll on all of us and left me feeling trapped, claustrophic and, most of all, guilty.

Daily Mail Online can reveal that the Saudi prince accused of a sex attack on his maid in Los Angeles is Majed bin Abdullah bin Abdulaziz Al Saud, son of the late King Abdullah (inset). He is seen for the first time today (left) officially greeting Sheikh Mohammed, the ruler of Dubai, to Saudi Arabia in January after the death of King Abdullah - a picture which underlines that he is in the upper echelons of the country's royal family. He was charged with felony sexual battery at his rented Los Angeles mansion (right) but those were dropped today. Prosecutors are now preparing misdemeanour charges.

John Caudwell, founder of Phones 4u, (pictured with daughters Rebekah and Rhiannon) believes chronic Lyme disease - which affects John and several of his family members - is behind the host of health problems that his son Rufus, 20, (inset) has suffered with for the past nine years. He is malnourished and has been diagnosed with generalised anxiety disorder, agoraphobia, emetophobia (fear of vomiting) and has suffered bouts of psychosis. Bella Hadid (left) has Lyme disease as well as her brother Anwar and mother Yolanda.

Shahena Uddin (left), 19, who was one of eight siblings, was 'regularly punished' by her brothers and sisters, for 'crimes' such as eating at the wrong speed. Punishments would allegedly include being force-fed rice and paper and being made to stand for long periods staring into a toilet bowl. She was even banned from using the toilet at their home in Watford but would be punished further if she attempted to use the sink, St Albans Crown Court was told. But the violence is alleged to have plumbed new depths of depravity last October when she was found beaten to death on her bathroom floor after choking on her own vomit the night before. The court heard how, when she was found the following day, the teenager had endured 'several beatings' - including with weapons. Ambulance staff, who were called to the house by the family, were told she was sick and fainted. By then, her four brothers, a sister and her two sisters-in-law had attempted to cover their tracks, the court was told. Pictured: Forensic investigators (top right) and police officers (bottom right) at the family home after her death.

Jose Mourinho may not have been impressed by his medical staff at the start of the season, but the Chelsea boss can, at least, rest assured that he is not managing in the Greek second division. Following a game between Larisa and Ergotelis at the weekend, hilarious footage has emerged featuring a pair of clearly untrained stewards attempting to take off a supposedly injured player on a stretcher. Ergotelis midfielder Leonardo Koutris was manhandled on to a stretcher before being rushed off by a burly pair of men with absolutely no respect for health and safety procedures.

Tommy Robinson (inset right), the founder of the EDL, has addressed the crowd of tens of thousands of supporters of the far-right Pegida movement, as they celebrate its first anniversary in Dresden. Police are braced for violence as senior German officials warned that the extremist movement is stirring up hatred that could lead to clashes. Chancellor Angela Merkel has been targeted by supporters of the movement (inset left), who accused her of 'treason' after she opened the country's borders to refugees. The rally comes just two days after a pro-refugee mayoral candidate in Cologne was stabbed in the neck by a man with a neo-Nazi background.

After noticing that a growing number of her straight female friends were embarking on sexual relationships with women, YouTube star Jaclyn Glenn, 27, interviewed four ladies (pictured) who have experimented with same-sex encounters to learn what prompted them to do so before sharing a collection of their thoughts in a video posted to her popular YouTube channel.

Groups of girls clutching each other in a bid to stay upright, revellers in fancy dress and students dressed in ripped bright orange T-shirts partied into the early hours as part of the Animal Instinct 'Unleash the Beast' tour in Birmingham and Liverpool last night. Many were left slumped against railings (left) or on the pavement (right) outside clubs as the night ended, while bouncers were forced to stop others from fighting. Despite temperatures dropping to below 10 degrees, dozens of girls wore short skirts and dresses (inset) for the night out, which has been criticised in the past for encouraging binge drinking and anti-social behaviour.

Jacky Sutton (pictured, left, with a koala, and right, with former colleague, Iraqi journalist Mazin Elias) was found dead at Istanbul's Ataturk Airport after missing a connecting flight to Erbil in Iraq from London Heathrow. She had appeared distressed after being told by airline staff that she would have to buy a new ticket and was later found in the toilets by three Russian passengers, according to local media. The 50-year-old held various positions with humanitarian organisations around the world and the United Nations as well as working as a producer for the BBC, often in war-torn countries, and once suffered from post-traumatic stress after being arrested for alleged spying in Africa. At the time of her death, Ms Sutton was working in the Iraqi city of Erbil in her role as the Iraq country director for the Institute for War and Peace Reporting (IWPR). She was appointed to the role at the end of June following the death of her predecessor Ammar Al Shahbander, who was killed in a car bomb attack in Baghdad in May (inset).

Researchers at the University of Padova suggest the cloth may have been created in India. They believe it then travelled extensively throughout the world (right), making contact with worshippers all over the Earth, before ending up in Italy. Another suggestion is that the shroud was created in medieval Europe, but people from all over the world came to see it, contaminating it with their DNA. The study adds to the mystery surrounding the authenticity of the Shroud, which is imprinted with the image of a man who appears to have been crucified (left). Some argue this is the image of Jesus.

Pictures said to have been taken near Aleppo, Syria last week shows mounds of what looks like cut off facial hair, alongside discarded packets of razors. In order to cross the border to Turkey undetected, ISIS jihadists are said to be shaving and disguising themselves in niqabs - a veil covering all but the eyes worn by some muslim women.

Viewers have been left shocked by the latest Downton Abbey episode after Lord Grantham suffered a burst ulcer and vomited blood all over the dinner table in scenes likened to a 'horror movie'. Fans including TV presenter Lorraine Kelly and TOWIE's Ferne McCann immediately took to Twitter to share their horror as the gruesome dinner table scene unfolded on last night's episode. Many compared the ITV period drama to a string of grisly horror films including Alien, Saw and the Exorcist after the Earl Of Grantham suddenly projectile vomited all over his dinner companions.

Honey, I Bought The House airing Mondays on Watch gives couples a chance to get on the housing ladder just as long as only one of them chooses the property, puts in an offer - and keeps their partner entirely in the dark. Sophie Riding, 25, and her boyfriend of five years Paul Hopkins, 29, took part in the experiment in the hopes that he would intuitively know which home would be the three-bedroom semi of her dreams, the top right detached for £179,950. But he preferred a semi-detached, bottom right.

Sarah Whitney (pictured), 31, was diagnosed with breast cancer when she was 20 weeks pregnant with her third child, Kal El, who was born on April 21. Whitney wanted to breastfeed her baby, but she was scheduled start another round of chemotherapy and was only able to do so for two weeks after Kal El's birth because of the potential harms of her medications. So Whitney hired local photographer Katie Murray to capture the moment she breastfed Kal El - who shares a name with Superman himself.

If you ever need some perspective on your place in the world, take a look at Nasa's new website. The space agency will be using it to post new, high resolution views of the rotating Earth every day. The image sequence, taken by the Deep Space Climate Observatory, will show the sun-lit side of the Earth as it rotates, revealing the whole globe over the course of a day. Pictured are images taken over the weekend of south America (left), Africa (top right) and China (bottom right).

Holly Burt, a 20-year-old design student from Florida, has emerged in a bid to trump current record holder - model Lauren Williams - who has 49 inch pins. Holly - who is 6ft 5ins tall - said she was picked on at school for being so tall - but added since moving to New York two years ago, men love her figure. Holly said: 'Back in middle school I was called daddy long legs, tree or giraffe - but the dating scene has gotten better since I moved to New York.'

An aging gangster went on trial Monday on charges he was in on the $6 million Lufthansa holdup in 1978, a legendary theft dramatized in the hit film Goodfellas. The brazen armed robbery of cash and jewelry in the dead of night at a cargo terminal at Kennedy Airport was 'the score of all scores' for Vincent Asaro and other mobsters of his generation, Assistant U.S. Attorney Lindsay Gerdes said in opening statements in federal court in Brooklyn. Asaro, 80, aligned himself with heist mastermind, the late James 'Jimmy the Gent' Burke - played by Robert De Niro in the 1990 Martin Scorsese film - 'because he knew Burke was someone he could make money with,' Gerdes said. 'Jimmy Burke and Vincent Asaro were true partners in crime.'

QUENTIN LETTS: Labour's leader, the Compo of the Commons, came flapping into the House yesterday in, I think, a new outfit. Had he been busy at Marks & Sparks over the weekend? Had Shadow Leader of the House Chris Bryant taken him off to see some inside-leg tickler on Savile Row?

Cohnor Coleman, 24 (left), is accused of shouting 'you're not such a big man now' after beating his lover's husband, Andrew Jackson, 43 (right), unconscious in an unprovoked attack on a night out in Richmond, North Yorkshire. Witnesses described Coleman as acting 'like a cage-fighter' as he repeatedly punched lorry driver Mr Jackson as he lay helpless on the ground. Coleman lashed out after spotting Mr Jackson during a night out, and 'taking out his frustrations' that his affair with Sarah Jackson (centre) was suffering 'problems'. Coleman has admitted manslaughter in connection with the April 25 incident, but is on trial for murder, which he denies.

If you ever need some perspective on your place in the world, take a look at Nasa's new website. The space agency will be using it to post new, high resolution views of the rotating Earth every day. The image sequence, taken by the Deep Space Climate Observatory, will show the sun-lit side of the Earth as it rotates, revealing the whole globe over the course of a day. Pictured are images taken over the weekend of south America (left), Africa (top right) and China (bottom right).

These delightful photographs show the grateful faces of adults and children in Britain upon opening food packages following the end of the Second World War in 1945. Seven decades later the images are forming part of a new free exhibition at gallery@oxo on London's South Bank from October 21 to 25. The stories of dozens of recipients of the packages will also be featured in the exhibition, including that of Gillian Roberts, 74, from Kent. She got her package at her bombed-out home shortly after her father had died and while her mother was in hospital with tuberculosis. Ms Roberts said: ' I can remember a huge tin of peaches, a bag of flour in a muslin bag, and I think a tin of butter. My grandmother, she just sat in the middle of the floor, just sobbing. We were just opened mouthed.' Pictured: A young girl proudly holds her package, while a family in Italy open their box in the ruins of their farmhouse near Cisterna.

Jen Glantz, 27, has a lot in common with Katherine Heigl's character in the movie 27 Dresses, as she's been a bridesmaid in plenty of weddings. But unlike Heigl's character, Jen charges from $199 to over $1,000 for her wedding services, which include planning the big day and even walking down the aisle. This month, she was in two bridal parties in a single weekend - one, in Michigan, on Saturday, and the other, in New Jersey, on Sunday. The New Yorker told Daily Mail Online how she flew in the middle of the night to make it on time, and even did her hair in an airport bathroom when her flight got delayed. She shared all the details of her hectic weekend, including how she had to write a toast with just five minutes' warning and was able to catch her second wind during wedding number two after just two hours of sleep.

The animals reacted angrily as the rider approached in the heart of Khao Yai national park near the city of Korat, in the north-east of the country. Footage taken on a car's dashboard camera shows the slow-moving rider trying to pass the elephants. But he was unaware that the herd had been agitated minutes earlier by the sound of a pack of motorcyclists roaring past. The man was forced to leap off his bike and run into the jungle as several elephants charged towards him trumpeting loudly (pictured).