We all know plastic is a real problem for our planet, but what can be used for packaging instead?Read more
Sites where they will be placed will include 20 rail and Underground stations, as well as high streets, parks and shopping areas.
A network of 28 fountains have already been installed through a partnership with Thames Water, while a further 50 will be delivered in the future as part of efforts to reduce plastic waste.
Sadiq Khan said: "With plastics polluting our oceans and causing untold harm to life in our rivers and waterways, it’s vital that we all make changes to reduce plastic waste."
Could a year's global plastic waste circle the Earth four times over?
Local Democracy Reporting Service
Lewisham Council bought 144,000 disposable plastic cups in the 12 months ending March.
The figures have been labelled “hypocritical” by Lewisham and Greenwich London Assembly candidate for the Conservatives, Charlie Davis, since the authority last November moved a motion to ban single use plastics and in February declared a climate emergency.
The cups were bought to stock Laurence House, the Town Hall, Civic Suite and Eros House.
The declaration came a month before the FOI period ended.
But Mr Davis said the authority was not moving as quickly as others to change its practices, such as Greenwich Council, which has pledged to remove single use plastics from its buildings by 2020.
Councillor Sophie McGeevor said the council had already made a commitment to end the use of single and short term use plastic in council buildings, offices, schools and nurseries by May 2022.
But the cabinet member for environment and transport said the council had stopped restocking the cups, but much more needed to be done.
Spring restaurant in Somerset House used to use 800 miles of cling film a year.
Sir David Attenborough has told the Business, Energy and Industrial Strategy Committee that "we cannot be radical enough" in dealing with climate change.
Broadcaster Sir David Attenborough has told the Business, Energy and Industrial Strategy Committee that "to chuck plastic into the ocean is an insult".
Campaign group Final Straw Solent clear up thousands of plastic pellets on beaches near Portsmouth.