This dataset maps noise pollution in London. Data is available for noise pollution from road and rail sources.
The following shapefiles are available to download below:
LAeq,16h: indicates the annual average noise levels for the 16-hour period between 0700 – 2300.
Lden: indicates a 24 hour annual average noise level with separate weightings for the evening and night periods.
Lnight: indicates night time annual average noise level results in dB, where night is defined as 2300 - 0700.
For the full datasets that covers all of England, please see DEFRA's strategic noise mapping pages.