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London's Ulez improved air quality but caused a 3.4% drop in outer London's retail spending.
London's expansion of the Ultra Low Emission Zone (Ulez) has improved air quality by reducing nitrogen oxide and particulate matter emissions.
However, it has also led to a 3.4% decline in retail spending on high streets in outer London boroughs, compared to a 2.8% fall in inner London.
Mayor Sadiq Khan's initiative has seen a 14% reduction in NOx emissions in outer London and a 31% decrease in PM2.5 emissions overall, though critics argue the financial impact on businesses was not adequately considered.
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Ulez de Londres mejoró la calidad del aire, pero causó una caída del 3,4% en el gasto exterior de venta al por menor de Londres.