questionText: To ask the Secretary of State for Transport, pursuant to the Answer of 11 December 2023 to Question 4772 on Diesel Vehicles: Greater London, how many diesel cars were registered for the first time in Greater London in (a) 2022 and (b) each month of 2023 that met the (i) Euro 6, (ii) Euro 5, (iii) Euro 4, (iv) Euro 3, (v) Euro 2 and (vi) Euro 1 engine emission standard.
answerText: The information requested is not readily available and could only be provided at a disproportionate cost.  
heading: Diesel Vehicles: Greater London