His mother, a team of mountain rescuers, and the local civil guard are searching for him after he disappeared while holidaying with friends.
Ms Law said he rang her to say he “didn’t know where he was”, that he “needed a drink” and had “cut his leg on a cactus”.
Despite his mobile phone battery being down to 1% he managed to send her a photo of his location.
When she told him to return to where he had walked from, he said he did not know where that was, Ms Law said.
He was without food and water, she added, and had been in a T-shirt and shorts. “It’s very warm in the day and very cold at night,” she told the UK Tonight programme on Sky News.
“So in the day he’s going to be really warm without a drink, and then at night he’s going to be very cold without any suitable clothing.”
Advertisement
Ms Law and others have printed off posters in both Spanish and English and have plastered them “everywhere”, she said.
Soon after Mr Slater went missing, an American woman offered to drive Ms Law up into the mountains.
There was “literally no sign of him anywhere”, she said. “We drove around all day.”
Mr Slater had posted a picture online of some mountains next to a house he had been to.
Ms Law drove around looking for a lamp and some flowers seen in that picture.
“We managed to find the house,” she said. “I knocked on the door and there were two people there.”
They told Ms Law that Mr Slater had gone out for a cigarette before going back in and saying he wanted to go home.
“They told me he’d spoken to the next door neighbours and they’d told him there was a bus every 10 minutes back down to Los Cristianos.
“The bus stop was right next to the house. So obviously if he’d gone to get the bus he wouldn’t have got lost because it [the stop] was visible from the front door.”
The trip back down from the mountains is an hour’s drive. “Everything looks the same – it’s just a road and hills,” Ms Law said.
“I can’t understand why he would come out of the house and then decide he was going to walk. I think he maybe set off walking with battery and had not realised how far the walk actually is.”
There are “so many questions that are unanswered”, Mr Slater’s friend said.
‘He’s not a stupid boy’
“The thing I find the most weird about this is the fact that there’s nobody that’s seen him.
“And he’s not a stupid boy – he’s got some nous about him.
“I’ve seen so many people up here and I’ve asked every single one if they’ve seen him – this is what I find weird.
“If he’d seen somebody, or a car, he would have flagged down the car – he would have said he needed a phone to contact someone.”
She added: “He would never have his family worrying like this – he would never have us worrying like this.
“If he saw someone, the first thing he would do is say ‘I need to ring my mum’ – I know that for a fact. He would never ever have his mum worrying like this.
“It’s just awful – I’ve never in my life been so worried.
“I’ve literally not slept at all since.”
The Spanish Civil Guard told UK media they are “doing everything possible” to find Mr Slater.
“A specialist mountain rescue and intervention group called the Greim have been mobilised.
“A police helicopter is also out and focusing on the area around the village of Masca.
“Other emergency services including firefighters have also been mobilised.”
The former head of royal protection says he warned the Royal Family about Mohamed al Fayed’s reputation before Princess Diana took her sons on holiday with him.
The women say he raped and sexually assaulted them while they worked at the luxury department store, prowling the shop floor and “cherry-picking” women to be brought to his executive suite.
Now, Mr Davies says people were aware of the Egyptian businessman’s reputation as far back as the 1990s, and that he raised concerns about him to the Royal Family.
“This was a man who I would be concerned [about] if a relative of mine was going on holiday with him, let alone the future king and his brother and their mother, Princess Diana,” Dai Davies told Sky News.
In July 1997, a month before she died, Princess Diana went on holiday with Fayed and his wife to their residence in St Tropez.
She took the two young princes with her – a holiday Prince Harry described as “heaven” in his 2023 memoir Spare.
“I was horrified because I was aware of some of the allegations even then that were going around,” said Mr Davies.
“I was aware that he had tried very hard to ingratiate himself with the Royal Family and obviously knowing, as I did, the reputation he was alleged [to have] then, I was concerned, and I took the opportunity to inform the Royal Family.”
Mr Davies says he was told: “Her Majesty is aware.”
“The rest is history,” he said.
Buckingham Palace told Sky News it had no comment on the allegations.
Fulham ‘deeply disturbed’ by allegations
Fulham FC, a football club that was owned by Fayed between 1997 and 2013, has saidit is “deeply troubled” by the dozens of “disturbing” sexual abuse allegations against the businessman.
The Premier League club also said it is “in the process of establishing whether anyone at the club is or has been affected” by this alleged behaviour.
However, Gaute Haugenes, who managed the club’s women’s team between 2001 and 2003, told the BBC extra precautions were taken to protect female players from Fayed.
“We were aware he liked young, blonde girls. So we just made sure that situations couldn’t occur. We protected the players.”
The legal team involved in a civil claim against Harrods for allegedly failing to provide a safe system of work for its employees said they aimed to seek justice for the victims of a “vast web of abuse”.
Lily Allen says she had her children “for all the wrong reasons,” at a “high pressure” point in her career when she felt “overwhelmed”.
The singer and actress had her two daughters, Marnie, 12 and Ethel, 11, with her ex-husband Sam Cooper when she was in her mid-20s.
By the time she became a mum, she’d already had hit singles including Smile and The Fear, released two studio albums and received a Brit Award for best British female solo artist.
Speaking about motherhood on the BBC podcast Miss Me?, which Allen hosts with her long-time friend Miquita Oliver, she said: “I think I had children for all the wrong reasons, really.
“Because I was yearning for unconditional love, which I haven’t felt in my life since I was a child.”
The now 39-year-old star added: “And also, my career was at such high speed, high pressure, and I felt like very overwhelmed by what was happening. I just didn’t get much respite you know?
“And I felt like the only way to stop people hassling me was to say, ‘It’s not about me, actually this is about this other person that’s inside me’.
When asked by Oliver if it worked, Allen says: “Yeah, they did leave me alone. I don’t think I really understood what was happening, what I got myself into.”
The daughter of actor Keith Allen and film producer Alison Owen, she went on to discuss her own childhood.
Advertisement
“My mum, bless her, had children really early as well, and she really struggled. But she doesn’t really talk about the struggle. And so… She inadvertently gaslit me into thinking it was, you know, easy.
“You just sort of throw the kid over your shoulder and you get on with it.
“Her job was very static, and in one place and went to an office and mine wasn’t like that at all. It wasn’t easy. It just wasn’t easy.”
The ‘nasty scars’ caused by absent parents
Allen previously told the Radio Times podcast that while she loves her children, having them “ruined her career”.
She said her decision to prioritise them over her pop career was a decision she made so as not to inflict the “nasty scars” of being an “absent” parent onto them.
She also said the myth of having it all “really annoyed” as it simply was not true.
Follow Sky News on WhatsApp
Keep up with all the latest news from the UK and around the world by following Sky News
Allen, whose younger brother is Game Of Thrones actor Alfie Allen, married Stranger Things star David Harbour in 2020.
Away from her music career, Allen has branched out into acting over the last few years, starring in two plays in London’s West End, and winning a role in Sky drama Dreamland last year.
An investigation has been launched after “Jail Starmer” graffiti was daubed on the window of an MP’s office.
The Met Police received an allegation of criminal damage on Saturday in relation to the incident at Clive Efford’s office in Eltham & Chislehurst, South London.
This is a new seat which was won by Labour at the general election, though in 2019 it was notionally Conservative.
On Friday night the window was painted with white graffiti which says “Jail Starmer”.
Sources told Sky News’ political editor Beth Rigby that an image of the vandalism has been circulating among Labour MPs’ WhatsApp groups this morning. However, Mr Efford has downplayed the incident.
There have been growing concerns about the safety of politicians in recent years, following the murders of Jo Cox and Sir David Amess.
MPs have described working in an increasingly hostile environment, with experiences ranging from death threats and abuse to attacks on their constituency offices and protests at their homes.
In a statement, the Met Police said: “On Saturday 21, September, police received an allegation of criminal damage to an office building in Westmount Road SE9.
“Graffiti had been daubed on the premises the previous day.
“An investigation has been launched and enquiries are ongoing.
“Anyone with information is asked to call 101 quoting CAD 2672/21Sep.”