Question to the Department for Transport:
To ask the Secretary of State for Transport, how many and what proportion of buses in England (a) meet and (b) exceed Euro VI emission standards.
Around 35% of buses in the English fleet meet the Euro VI emissions standards, or 12,150 buses. This includes buses which have been retrofitted to Euro VI standards.
Buses which exceed the Euro VI emissions standard are zero emission buses. There are 317 zero emission buses in operation in England, or 0.91% of the total number in the bus fleet.