Artificial Light and Noise: Effects on Human Health (Science and Technology Committee Report)

Baroness Neville-Jones Excerpts

Thursday 9th May 2024 Grand Committee

[Baroness Neville-Jones (Con)]

My Lords, I thank our chair for her excellent leadership in our examination of policy on light and noise as they affect human health; it has been exemplified by the exposition and presentation she has just given us on the committee’s conclusions. I also echo what she said about the outstanding work done by the staff in preparing the report.

We were not equally happy about the Government’s reaction to our report. The report sought to put policy on a more substantial footing than exists at the moment, with some, frankly, fairly modest recommendations for more research, greater involvement of experts and the updating of policy goals and guidance. Those recommendations are not without any financial consequence, obviously, but they were modest in scope. However, as our chair said, they were met by a pretty negative response, which was also distressingly dismissive in tone and lacking in ambition. The Government’s reply of last December leaves the impression that, where shortcomings exist, the priority to be accorded to them is not great enough to merit much action. We are quite aware that these pollutants are not the most important thing that the Government face. Nevertheless, this is one of those cases where a small amount of action can improve a situation and prevent it getting worse without a great extension of government activity or expenditure.

One of the difficulties pointed out by our chair is that many of the noise generation issues—and, indeed, some of the lighting issues—lie outside the direct purview of the lead department, Defra. They fall under the Department for Transport or local government, or elsewhere in government. We would like to see Defra seek to engage them and assert its co-ordinating role, which is rather dormant at the moment. This is despite the fact that, in its reply, the department acknowledged that, second only to poor health quality, noise is an environmental cause of ill health, increasing the risk of cardiovascular and metabolic disease. The costs of those will not be borne by Defra but they do increase the national bill for health, which the taxpayer has to bear. So, lack of action is not neutral in its effects. Contributing to bringing down the adverse impact of noise should be a priority for Defra; this implies also that the department will work with the UKHSA to fill the gaps in our knowledge that the department accepts exist.

Other members of the committee will cover our conclusions relating to noise. In my remaining time, I will focus on the effects of light, of which our understanding, as others have noted, is even less well developed than that of the effects of noise pollution. The reasons are fairly obvious, but our lesser knowledge does not justify lighting not being treated as a nuisance, when it was recognised as potentially being so as long ago as 1990. Relatively little has happened since then. In 2010, the Royal Commission on Environmental Pollution made recommendations on minimising light pollution, but many of those have remained either unimplemented or only partially implemented. The Minister, Rebecca Pow, told us in her evidence that

“there was not enough evidence to do anything to change the way we regulate”.

Subsequent policy statements have taken different positions. Policy statement 23 of the National Planning Policy Framework removed lighting from the context of the environmental improvement plan, which failed to mention it—whereas the 25-year environment plan included it. That is part of the background to the committee’s comment that policy is confused.

Since the 1990s, artificial light at night has become ever more pervasive and the night sky harder to see. Cheaper LED lighting has increased the pace and brilliance of illumination. A lot of that is popular, but glare on roads from car headlights is becoming an active source of disruption and complaint from drivers. It has long been clear that light can influence circadian rhythms and disrupt sleep, but exactly how and to what extent are less clear. That is why we recommended that, as UKHSA has no explicit team focusing on the effects of light, the work should continue and that it needs to move beyond the laboratory to investigate more realistic light exposure patterns relating to human behaviour so as to provide a better evidence base for mitigation policies.

In her evidence, the Minister acknowledged that, while policy had not evolved much in recent years, the situation was changing. She said that a national policy statement on light, to parallel that on noise, was

“certainly something that could potentially be considered”.

The department’s response of December, however, contains the following statement:

“Significant gaps in our understanding of the effects of artificial light would need to be addressed to inform a Light Policy Statement for England”.


The response argued that a more immediate priority should be to identify the most important knowledge gaps and to prioritise the research to fill them. There is no disagreement on our part that research is needed, but, as our chair has said, the department rejected our recommendation, relating to core evidence, that a standard methodology be developed for tracking, monitoring and reporting on light pollution. It did so on the grounds that technical data issues would need to be resolved by developing the necessary techniques to do this. In other words, valid evidence could not be collected because the department did not know how to do it. I very much hope that the department’s intention to hold a round table of experts to

“identify the most significant gaps in evidence; areas where the most value could be provided to public health; and options for how government can facilitate and potentially coordinate new research”

will be the start of the development of the techniques necessary to collect relevant evidence that could underpin valid research on the impact of artificial lighting. I would be grateful if the Minister could confirm this.

The department said it did not agree that creating a body of independent experts to give advice would be useful—a surprising statement—as this would “reduce flexibility”, and it commented that “one-size-fits-all guidance” from government on lighting standards would not be useful for professionals. I do not think the committee suggested that or would regard it as sensible. Indeed, when you look at the scene, the professionals have provided quite a lot of the movement, guidance and development on controlling light pollution—more so in many respects than government action. I hope the Minister will agree that, when the department defends its action on the basis of existing policies being followed by various government agencies in different spheres, this, although useful, does not cover the ground adequately.

In the Minister’s letter of 17 April, the Lighting Liaison Group is said to be considering how a UK lighting strategy might look. On the face of it, this is a helpful step forward. I hope its exploration of the possibility of accessible guidance on light pollution for local authorities and their planners to deal with statutory nuisances and develop best practice will result in the creation of such guidance and its implementation by government. The key question is whether “considering” doing it means that the Government will actually do something about it. It would be helpful to hear from the Minister whether that is the case. Can the involvement of the UKHSA, which was mentioned, be interpreted as an earnest of the department’s commitment to reducing the impact on health of unwanted lighting?

Finally, it is good to hear that departmental officials are pursuing the possibility of links with relevant officials in other European countries to investigate best practice there. More ambitious research appears to be happening among some of our neighbours, and evidence given to the committee suggests that investigating it could be profitable. I look forward to the Minister’s reply.