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• Reference: 2019/20207
• Question by: Peter Whittle
• Meeting date: 14 November 2019

Do you still regard Extinction Rebellion as, to use your word, 'Allies'?

• Reference: 2019/14269
• Question by: David Kurten
• Meeting date: 18 July 2019

It is known that PM 2.5 levels on the London Underground are many times higher than the legal limit, with Hampstead being one of the worst examples, but what are average annual concentrations of NO 2 , SO 2 , methane, ozone and volatile organic compounds at the platform level in Hampstead Station and other PM 2.5 blackspots?

• Reference: 2019/14271
• Question by: David Kurten
• Meeting date: 18 July 2019

What is the composition of the different elements and compounds in PM2.5s above ground?

• Reference: 2019/14272
• Question by: David Kurten
• Meeting date: 18 July 2019

What is the composition of the different elements and compounds in PM2.5s below ground on the tube network?

• Reference: 2019/14273
• Question by: David Kurten
• Meeting date: 18 July 2019

Do you consider that total PM2.5 concentration is a good measure of assessing the health risk of particulate matter, or would it be better to measure and report the PM2.5 concentrations of individual chemicals and material groups such as iron, carbon, pollens, salt, upholstery fabrics? Given your differing and incompatible narratives on the risk of tube dust above and below ground, do you think a rethink is necessary to move towards reporting separate PM2.5 levels rather than total PM2.5 levels as a global standard?

• Reference: 2019/8899
• Question by: Peter Whittle
• Meeting date: 16 May 2019

You encouraged the Extinction Rebellion protests in the week before Easter, with arrested demonstrators claiming that their actions were effectively endorsed by you Tweeting: ‘We’re facing a climate emergency. I fully support the right of protesters to protest on this vital issue and urge organisers to work with police to ensure their demonstrations are peaceful and lawful and that disruption is kept to a minimum.’ However, the UK contributes a tiny fraction of global carbon emissions, just 1% and falling. By contrast, China produces 29% of the world’s CO2 emissions. How much responsibility you are going to shoulder for these...

• Reference: 2019/8903
• Question by: Peter Whittle
• Meeting date: 16 May 2019

To ask the Mayor is it true that protesters at the Extinction Rebellion protests before Easter were provided with prepared witness statements, designed to convince the courts that their actions were a “reasonable and proportionate response”? These documents advised protesters to tell officers that they have the support of the Mayor of London, who has declared a “climate emergency” in London.

• Reference: 2019/6192
• Question by: David Kurten
• Meeting date: 21 March 2019

What was the average annual PM 2.5 level in each of the 19 years from 2000 to 2018 in (i) Greater London (ii) Inner London (III) Outer London (iv) Central London

• Reference: 2019/6193
• Question by: David Kurten
• Meeting date: 21 March 2019

In the last meeting of the Environment Committee your Deputy Mayor Shirley Rodriguez would not commit to bringing PM 2.5 levels on the Underground down from over 300 µg/m 3 to your target of 10 µg/m 3 when I asked her. Will you as the Mayor commit to your own target of bringing PM 2.5 levels down to 10 µg/m 3 on all parts of the Underground?

• Reference: 2019/6194
• Question by: David Kurten
• Meeting date: 21 March 2019

What was the average annual NO x level in each of the 19 years from 2000 to 2018 in (i) Greater London (ii) Inner London (III) Outer London (iv) Central London