The European Commission has launched legal action against the UK for failing to control air pollution in 16 areas across the UK.
A French deputy mayor has called London "a suburb of Paris" days after the UK's capital was named more popular a destination than Paris.
All of Camden’s main roads break the European legal limits for nitrogen dioxide, along with the City of London and Kensington and Chelsea.
The government made the decision after air pollution levels exceeded safe levels for 5 days in a row in the French capital. French experts say the move - last used in 1997 - does have an impact on improving air quality.
Public transport was made free of charge on Friday and today in an attempt to encourage Parisians to leave their cars at home.
London has been voted the second best city in the world to be a student.
It just missed out to Paris, which took the top spot in the survey by QS Best Student Cities.
It's the second year in a row the French capital has been voted number one.
The top 50 are selected based on their scores in five categories.
The 'student mix' category considers the student community, including the ratio and volume of international students.
The 'employer activity' category looks at which cities are thought by employers to produce the best graduates.
The 'quality of living' category is based on the Mercer Quality of Living Survey and the Global and World Cities index.
The 'affordability' category is based on cost of tuition fees, the Big Mac Index (retail prices), the iPad Index (how much an iPad costs) and the Mercer Cost of Living Index.
A group of disability campaigners arrived in London today after rollerblading their way from Paris. They had pushed several wheelchair users all the way from the French capital to come and see the Paralympics. Organiser Nadia Araiz explained what the journey had been like.