Young affected person Charlie and her physician Professor Adam Fo (Image: Suzi Arkley/Humphrey Nemar)
“Someone cries in every clinic”, says Professor Adam Fox as we tour the UK’s first specialist hospital devoted to delivering groundbreaking food allergy remedies. “The difference is that it used to be crying in despair and now, broadly, it’s crying with happiness.” Around three million people stay with food allergy symptoms in the UK. Until lately, therapy amounted to telling them what they were delicate to and advising them to keep away from it.
Now, therapies that can free youngsters and their households from the fixed worry of life-threatening reactions have burst onto the scene. Oral immunotherapy (OIT) includes giving a small, rising dose of an allergen under medical supervision to construct tolerance. If youngsters begin younger, they can go from being at risk of dying from a hint of hazelnut, mustard, egg or another set off, to tolerating a small quantity. This can be enough to unlock new freedoms for terrified dad and mom or enable a teenager to go on vacation with their associates.

Charlie eating her chocolate pudding, and recovering from a dangerous response (Image: Suzi Arkley)
One eight-year-old boy was in a position to journey to China to meet his grandparents for the first time after being handled for a peanut allergy at the clinic. Prof Fox says: “The difference between now and six years ago is night and day. Most kids diagnosed in infancy, we can actually cure.
“Even being OK with a couple of peanuts means you can stop worrying that someone has used the wrong knife or not scrubbed the pan properly, because you’re not going to react to small exposures, which are what cause the overwhelming majority of accidents.”
Charlie Arkley, 11, was given a new lease of life by OIT. She was recognized by Prof Fox with a extreme allergy to 4 nuts — peanuts, cashews, Brazils and pistachios — after struggling from rashes as a child.
There was little that could be achieved a decade in the past. The household moved to New York, where she later suffered a terrifying response in a Halloween nightmare. Charlie and her child sister Chloe, now 7, were trick-or-treating dressed as pirates when she bit into a piece of sweet containing peanuts. An ambulance was called and she needed three pictures of epinephrine.
Mum Suzi remembers: “That was a scary episode but at that point in 2018 the world of allergy medicine was still very much, ‘Just avoid the nuts you can’t eat, carry your EpiPens and be very diligent’.”
The household met with Prof Fox after returning to the UK in 2021 and were amazed to discover issues had modified. Suzi says: “He was telling us that if we brought Charlie to him at the age of 10 months now, we would have a very different strategy. This whole idea of early exposure had really gained traction in the time Charlie had grown up.”
Charlie joined the NHS ready record for Palforzia, a drug that helps youngsters construct tolerance to peanuts. (It has since been discontinued by the producer for operational causes.)
Then she suffered another life-threatening response during a picnic, after eating a pastry emphatically labelled as nut-free. Suzi said: “After that, we decided we weren’t going to wait for the NHS. We were going to pay to do it privately.”
Over three years, Charlie accomplished six to eight months of OIT for each of the 4 nuts. “Now she eats a small dose of peanuts, Brazil nuts, cashews and pistachios every day,” Suzi says. “She mixes it with chocolate pudding. When she gets bored of chocolate pudding, she mixes it with hummus.”
The therapy means Charlie can take pleasure in the same freedoms as her friends, such as visiting her favorite matcha cafe with associates. She always informs employees about her allergy but now knows that if an error were made, it would not be deadly.
In February 2023, 13-year-old Hannah Jacobs died from a deadly anaphylactic response after taking a sip of a Costa Coffee scorching chocolate mistakenly made with cow’s milk.
Charlie’s tolerance is “life changing, for her and for us”, Suzi says. “It’s been an incredible journey. I am absolutely in awe of how far this field of allergy medicine has evolved.
“My hope is that now there will be bigger things that Charlie will need to worry about as she embarks on her secondary school journey. This will always be there but it will be something she becomes comfortable living with, part of the muscle memory of how she goes about her day.”
The treatment cost tens of thousands of pounds. Suzi adds: “We had to make some sacrifices to afford it, but they were well worth making. I’m frustrated that more people cannot access it.”
NHS provision of OIT is a “patchy” postcode lottery, Prof Fox says. The paediatrician describes the situation as a “disaster”, particularly when research shows food allergies have doubled in the last 20 years.
He argues that such a huge gap between the burden of a disease and treatment provision would not be accepted in other specialties, such as cancer or heart care.
“The disparity between what we’re able to offer here and what you get offered in other developed healthcare economies is a disgrace,” Prof Fox adds. “The real frustration is that if we were able to instigate proper allergy prevention and put these disease-modifying treatments into place, it would save the NHS money.”

Prof Fox (right) and colleagues James, Prof Lack and Prof Du Toit at the clinic (Image: Humphrey Nemar)
Prof Fox labored full-time in the NHS for 25 years, including 9 as scientific lead for allergy at Guy’s & St Thomas’ Hospital, during which time it was recognised as an worldwide centre of excellence. He initiated the first affected person outside of the US on Palforzia at Great Ormond Street Hospital in 2021.
However, as these new therapies arrived, he says it grew to become clear that the NHS lacked the organisational will to roll them out at scale. He and some other leaders in the area started to really feel that “if we’re going to do this, we have to be in the private sector”.
He provides: “I came to the point where I felt that the right thing for me to do, in terms of actually looking after patients and doing what I could do best, was in the private sector, which is really sad.”
This is why he has joined forces with two top consultants — Professor George Du Toit and Professor Gideon Lack — to launch the Allergy Centre of Excellence. Their specialist hospital in London’s Marylebone is thought to be the biggest centre for OIT in Europe.
The clinic, which was officially launched last month, will see around 20,000 patients a year, including 500 seeking desensitisation. Prices for a course of OIT start at £6,000.
There is a paediatric intensive care doctor on site during treatments and a high dependency unit equipped for emergencies. There are large, open waiting areas where children can play while being easily observed.
And an on-site pharmacy dispenses novel drugs such as Neffy, the needle-free spray that can replace adrenaline auto-injectors. “There’s more expertise around anaphylaxis in this building than you’ll get anywhere else in the country,” Prof Fox says.

Prof Fox has dedicated his career to improving NHS allergy care (Image: Humphrey Nemar)
He spends two days a week here and also continues to work at his own private practice and in the NHS. He hopes the centre will demonstrate the benefits of comprehensive allergy care, providing a new model that could be rolled out.
Prof Fox adds: “The future looks very bright and it’s great to be a part of it. At the moment, somebody has to die in order for anybody to pay any attention, and we really do need to get past that.
“There are families that can’t get anywhere close to somewhere like this and that’s fundamentally wrong. We can do it in pockets — in central London where people can afford it.
“But people should have access everywhere, particularly when they’re first diagnosed in early childhood because that’s when the treatments make the biggest difference.”
A Department of Health and Social Care spokesperson said: “We know allergies can impact sufferers’ lives significantly and we commend Professor Adam Fox’s career-long efforts to improve allergy treatment.
“We are committed to improving care for people with allergies and that is why we are working with a range of partners and experts to consider how allergy care and support could be improved, including considering the recommendations in the National Allergy Strategy.”
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