The Government published its Green Paper with proposals for its new aviation strategy at the end of last year which it will finalise and release in the second half of 2019. The consultation will end on 20th June 2019 It is an important document. It sets out proposals for UK aviation policy until 2050.
The consultation was originally due to close on 11th April but has been extended to 20th June 2019 in part, allow comment to be made on the Committee on Climate Change report due in May.
Link to the full paper: https://aviationstrategy.campaign.gov.uk
There’s also a NATS paper on the new type of flight paths being introduced: https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/763085/nats-caa-feasibility-airspace-modernisation.pdf
And a CAA paper on past and future noise levels: http://publicapps.caa.co.uk/docs/33/CAP%201731%20Aviation%20Strategy%20Noise%20Forecast%20and%20Analyses.pdf
Read the 3 page summary HACAN has put together: http://hacan.org.uk/wp-content/uploads/2019/03/Green-Paper-summary.pdf
Here is a short paper to help you with your response:http://hacan.org.uk/wp-content/uploads/2019/03/Green-Paper-response-pointers.pdf