Blog posts

Expansion of London’s Ultra Low Emission Zone (ULEZ): why is it causing so much controversy?

ULEZ zone in London

There is nowhere in London that meets the World Health Organization’s (WHO) Air Quality Guidelines (AQGs). The main reason for this is road traffic. So why has the Mayor’s plan to expand the Ultra Low Emission Zone (ULEZ; an area of London that more polluting vehicles have to pay £12.50 to enter) to include the outer London boroughs sparked so much resistance? Professor Frank Kelly who leads the Environmental Research Group at Imperial explains that there are strong health grounds for expanding the ULEZ.


An overwhelming body of evidence exists that the health effects of air pollution are serious and can affect nearly every organ of the body. Recent studies and large research programmes have also shown that these harmful health effects are not limited to high exposures but can also occur at very low concentrations. Consequently, the WHO has had to update its AQGs, which now recommend substantially lower air quality limits for PM2.5, PM10 (particulate matter less than 2.5 and 10 μm in diameter respectively), and the gaseous pollutant nitrogen dioxide. One of the most significant sources of these air pollutants in urban areas is road traffic. It is also the source that has repeatedly been shown to affect our health. In London this is particularly true because of the size of its population and the density of its road network.

Is an H5N1 ‘bird flu’ pandemic inevitable?

The largest ever outbreak of bird flu is spilling over into mammals, including foxes and otters in the UK. Could this transmission see a jump to humans? Dr Thomas Peacock from the Department of Infectious Disease discusses.


Avian influenza virus has been featured prominently in the news again over the past few months. Headlines urge vaccine stockpiling, show images of beaches covered in dead sea birds or seals, or people in hazmat suits carrying bin bags full of dead birds or mink. Three years into the COVID-19 pandemic, is another pandemic unavoidable?

We have been in this situation before, back in the late 1990s and early 2000s, headlines spoke of ‘bird flu’ – H5N1 viruses ancestral to the ones currently circulating in Europe – as the inevitable coming pandemic. In fact, in 2009 an influenza pandemic did occur, but rather than the deadly H5N1 bird flu, it was caused by an obscure swine influenza virus that passed onto humans and caused the 2009 ‘swine flu’ pandemic.

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Academic Women Association: a new women network at Imperial

Academic Women Association

How can we close the gender gap in STEM? Dr Ilaria Belluomo explores how a new network at Imperial aims to provide a safe space for women to discuss and plan their careers in leadership roles – in and outside academia.


We are all aware of the disparity between the number of men and women in senior academic positions, as well as the limited number of female mentors available to support and inspire young girls interested in pursuing a career in science. This small percentage of female representation can give the impression that a career in science and academia, in the current climate, can be difficult and hard for women to pursue. Things are slowly improving, but we are only at the beginning of initiating this change. We continue to have conversations and work on initiatives to ensure that the academic gender gap can be improved.

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Lunch is up for London school kids. What are the implications of the universal free school meals policy in London?

Girl holding tray of food in school canteen

As well as providing vital relief to disadvantaged children and families, free school meals are essential to ensuring children reach their full potential, writes Dr Jennie Parnham from the School of Public Health.


On 19th February 2023, the Mayor of London, Sadiq Kahn, announced plans to provide free school meals to all primary schoolchildren (ages 4-11 years) in London.

In England only infant schoolchildren (4-7 years) are given universal free school meals (UFSM). For older children, free school meals are means-tested and are only available to households receiving Universal Credit (with incomes <£7,400/year). The remaining children must pay for school meals.

This policy will dramatically expand the current free school meal provision in London, reaching 270,000 children at a cost of £130 million. But what will this unprecedented policy announcement mean for children, their families, and our wider society?

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The iKnife – the cutting-edge of cancer diagnosis?

The iKnife analysing a liver tissue sample

For all the advancements medicine has seen in recent decades, there remains a major public health challenge: cancer. However, a new surgical tool called the iKnife has shown significant promise in improving the diagnosis of endometrial (womb) cancer. Professor Sadaf Ghaem-Maghami discusses how this new tool could transform the clinical care of thousands of patients.


Endometrial (womb) cancer is the most common gynaecological cancer in the UK, and the fourth most common cancer in women. It affects 9,300 women and people with gynae organs every year in the UK alone. It generally occurs in postmenopausal women, but up to 25% of cases are diagnosed in the pre-menopause. Its main symptom is one of abnormal bleeding. These women are usually referred to the two-week wait clinics for diagnosis or exclusion of cancer.

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Exploring Community-Based Care and Support Networks for Frail People

Many of us will need support as we age but who exactly provides that care? Dr David Sunkersing offers new insights into the support networks of frail people.


Frailty is a clinical syndrome, most common in older adults and associated with an increased risk of adverse health outcomes including falls, hospitalisation and reduced survival time. Many frail individuals therefore rely on family, friends, groups, healthcare professionals, carers and others to assist with their care and support needs and maintain both their independence and quality of life (a care and support network).

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Navigating LGBTQIA+ discrimination in healthcare: where do we go from here?

Avi Kaura, LGBTQIA+ Student Officer

As a chronically under-represented and under-researched group, the unique experiences of LGBTQ+ healthcare staff in the workplace are often neglected. Third-year medical student, Avani Ela Kaura, highlights why it’s imperative that we listen, address and support the specific needs of LGBTQIA+ people.


Exploring how work-related stress affects LGBTQIA+ healthcare professionals in my recent Letter to the Editor was greatly saddening, and a little dark. However, having been published in The BMJ  and reaching a wider audience, my hope is that awareness has been raised, granting volume to these silenced voices. This is especially important as the unique yet varied experiences of LGBTQIA+ people are in-genuinely, or more frequently, not explored. Despite being at the dawn of my career, I am keen to pioneer a movement of change.

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Advancing diversity in the healthcare workforce

Brian Wang

When Imperial alumnus Dr Brian Wang founded In2MedSchool, he had one aim: to break down the barriers preventing students from disadvantaged backgrounds pursuing medicine. Brian shares his motivations for supporting the next generation of medics.


In the summer of 2022, before my final year of medical school, I had the opportunity to support the national efforts against the COVID-19 pandemic at Imperial College Healthcare Trust NHS hospitals. My experiences as a medical student and volunteer during this time kick-started my passion for advocating diversity within the healthcare workforce. Levelling the playing field and ensuring the diversity and representation of medical staff—in my mind at least—seems beneficial to the healthcare workforce and the communities that our healthcare system supports.

Today I am the founder of In2MedSchool, a charity that provides support for disadvantaged children with ambitions to study Medicine and healthcare-related degrees at university.

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Inspirational leadership matters: supporting the next generation of clinical academics

Dr Maddalena Ardissino

This festive period, Three Wise Women from the Faculty of Medicine will be giving us the gift of wisdom.


The journey to becoming a clinical academic can be long and arduous, with many obstacles. Dr Maddalena Ardissino, from the National Heart and Lung Institute, reflects on her own experiences as a trainee and explains why mentorship is key to supporting the growth and development of young, aspiring clinical academics.

Almost exactly five years ago, I stood amongst a crowd of young academics at a poster session at the Intensive Care Society’s annual conference, experiencing a feeling of anxiety I’ve never known before or since. I was in my fifth year of medical school and standing in front of a group of excellent researchers who were about to listen to me give my first scientific presentation. It seemed unthinkable to me, at the time, to think that they might have the slightest interest in what I had to say.

Since then, my journey through clinical and academic training has been what I can only describe as an adventure. I quickly realised that there isn’t a single defined path for clinical academics, with each individual moulding a slightly different journey. When I look around at my fellow clinical academics at the National Heart and Lung Institute, however, there is one key feature that we all share: enthusiasm. And behind this feature there is one single, common theme: the support of a truly inspirational mentor.

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Setting up the Julia Anderson Training Programme: lessons learned

Clarissa Gardner

This festive period Three Wise Women from the Faculty of Medicine will be giving us the gift of wisdom.

Clarissa Gardner, founder of the Julia Anderson Training Programme, shares insight into setting up the scheme and provides practical guidance for others on how to use the model within their own organisations. 


2020 was a strange year. We lived through a pandemic that took a huge toll on our economy, our mental wellbeing, and for some of us the lives of our loved ones. 2020 was also the year in which there was renewed interest in addressing social injustices that have impacted traditionally underserved communities across the world.

At Imperial College London, like many other academic institutions, there were many discussions being held about our history, curriculum, use of language to describe people, and the representation of students and staff of different backgrounds at various levels. (more…)