Question to the Department for Transport:

To ask the Secretary of State for Transport, whether her Department holds data on noise readings from Heathrow Airport on (a) 21 March 2025 and (b) average on other days.

The Department does not hold data on individual noise readings from Heathrow Airport.

We expect airports to help local communities understand their noise impacts through monitoring, provision of information and communication. Heathrow publishes a wide range of noise data on its website including real time data from its noise monitors and annual reports which detail its noise impacts.