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Millions of UK children could face hidden lead risk as experts call for toddler blood tests

Millions of UK children could face hidden lead risk as experts call for toddler blood tests

A cross party group is urging routine lead screening for one and two year olds, warning the UK may be “dangerously complacent” about a toxic metal still found in homes, soil and water. Here’s what parents need to know.

Female nurse drawing blood sample from young girl in medical office

Published: February 23, 2026 at 1:38 PM

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Millions of UK children could be unknowingly exposed to lead, prompting fresh calls for routine screening of babies and toddlers.

A group of 50 MPs, peers and academics has urged Health Secretary Wes Streeting to introduce blood tests for all children aged one and two, warning that the country has been “dangerously complacent” about the risks of the toxic metal.

The cross party letter follows an investigation that found lead remains present in some UK homes, soil, drinking water and food, despite being banned from paint and petrol decades ago.

Why experts want routine screening for toddlers

In the letter, signatories called on the government to integrate lead screening into existing NHS health checks and childhood immunisation appointments. They argued that universal testing would help identify clusters of exposure and uncover environmental sources of what they described as a “potent neurotoxin”.

“UK governments must do the responsible thing and ensure no child suffers undetected lead poisoning simply because we did not bother to look,” the signatories wrote.

Children are especially vulnerable to lead because their bodies absorb it more easily than adults. Even low levels of exposure have been linked to life long reductions in IQ, behavioural difficulties, delayed growth and hearing loss.

Unlike some other high income countries, the UK does not currently have a routine national monitoring programme for lead exposure in children.

How other countries approach lead testing

In the United States, children covered by Medicaid, the public health insurance programme, are routinely screened for blood lead levels at around ages one and two.

In France, parents of children aged between nine months and two years complete a lead risk questionnaire at routine doctor visits. If a child is considered at risk, a specialist blood test is recommended.

Campaigners say similar measures in the UK would help detect hidden exposure earlier, before it has a lasting impact on a child’s development.

What is happening in the UK right now?

Earlier this year, the UK launched its first screening study for childhood lead poisoning. The pilot, known as the Elevated Childhood Lead Interagency Prevalence Study, is currently under way in Leeds.

Families in the area have been sent finger prick blood test kits, along with instructions to collect soil and house dust samples from their homes. The aim is to uncover hidden exposure and lay the groundwork for a potential nationwide screening programme.

If successful, government health officials have said the methods developed in Leeds could be rolled out more widely across the UK. The study is funded by UK Research and Innovation, with the first results expected in the spring.

Last year, the government said it was reconsidering whether to routinely test children for lead exposure, adding that it was “unacceptable that anyone in this country in the 21st century should fall victim to lead poisoning”.

Supporters of routine testing argue that early detection could allow families to remove sources of contamination, such as peeling old paint, contaminated soil or ageing plumbing, before long term harm is done.

What parents should know about lead exposure

Lead is most commonly found in older housing, particularly properties built before the 1980s. It can linger in paint, dust and soil, and in some cases may enter drinking water through old pipes.

Symptoms of lead exposure are often subtle and can easily be mistaken for other childhood issues. That is one reason campaigners say screening is so important, as many children may show no obvious signs until developmental delays become apparent.

The Department of Health and Social Care said it is “working closely with the UK Health Security Agency to raise awareness of lead hazards among public health professionals, while overseeing surveillance and intervention through its lead exposure surveillance programme and its annual reports on exposure in children”.

It added: “The UK national screening committee is currently working on plans for a new review of screening children for lead poisoning and more information will be available in due course.”

For now, parents concerned about possible exposure can speak to their GP or health visitor for advice, especially if they live in older housing or are planning renovations. As research continues, the debate over routine screening looks set to remain firmly on the public health agenda.