not been paying much attention to this until recently
from April 2019, if your car is not Euro 6 for diesel or Euro 4 for petrol, you pay the T-charge (which is the same as the congestion charge) in addition to the congestion if you go in to the congestion charge zone
from Oct 2021, if your car is not Euro 6 for diesel or Euro 4 for petrol, you pay the T-charge if you enter the area within the North Circular Road and the South Circular Road
come summer 2021, good time to buy diesel cars from Londoners
from April 2019, if your car is not Euro 6 for diesel or Euro 4 for petrol, you pay the T-charge (which is the same as the congestion charge) in addition to the congestion if you go in to the congestion charge zone
from Oct 2021, if your car is not Euro 6 for diesel or Euro 4 for petrol, you pay the T-charge if you enter the area within the North Circular Road and the South Circular Road
come summer 2021, good time to buy diesel cars from Londoners