• Reference: 2025/0099
• Question by: Keith Prince
• Meeting date: 16 January 2025

What do you perceive to be the biggest challenge to reach your commitment to make London's rivers swimmable within 10 years?

• Reference: 2025/0098
• Question by: Keith Prince
• Meeting date: 16 January 2025

Have you undertaken any engagement with professional stakeholders to consult on implementing this pledge?

• Reference: 2025/0097
• Question by: Keith Prince
• Meeting date: 16 January 2025

How are you planning to reach your pledge to have 'swimmable rivers' in the next 10 years?

• Reference: 2025/0096
• Question by: Keith Prince
• Meeting date: 16 January 2025

Do you have a target for air filtration units on the Underground network, and how much funding will be required for this endeavour?

• Reference: 2025/0095
• Question by: Keith Prince
• Meeting date: 16 January 2025

How much does it cost to install an air filtration unit on a Tube?

• Reference: 2025/0094
• Question by: Keith Prince
• Meeting date: 16 January 2025

How much investment have you made in exploring track cleaning trains and other methods, and will there be a strategy announced after the trial on the Piccadilly line in early 2025?

• Reference: 2025/0093
• Question by: Keith Prince
• Meeting date: 16 January 2025

Which other Tube lines have had track cleaning or other similar trial methods?

• Reference: 2025/0092
• Question by: Keith Prince
• Meeting date: 16 January 2025

In the report, as part of the approach to combat air pollution, 'trials of air filtration units at Westminster station and a trial of a new track cleaning train on the Piccadilly line is planned for early 2025'. Which other stations and Tube lines have had filtration units?

• Reference: 2025/0091
• Question by: Keith Prince
• Meeting date: 16 January 2025

According to TfL's annual monitoring of air quality in the Tube, dust levels on average did not improve when compared to 2023. What can you do to rectify this situation and improve air quality on the Tube?

• Reference: 2025/0090
• Question by: Keith Prince
• Meeting date: 16 January 2025

What has been the impact of the expanded ULEZ in Outer London on emissions, and in particular in Havering and Redbridge?