From CAA SkyWise:
On 30 October 2019 the Secretary of State for Transport wrote to the UK Civil Aviation Authority (CAA) to amend the 2017 Air Navigation Directions to give us a new requirement to review the classification of airspace.
We are now beginning the first airspace classification review and we would like your help. Click here to see our consultation for more information and respond online before 3 March 2020.
Link: Airspace classification review 2019–2020 - Civil Aviation Authority - Citizen Space