The Environment Agency has released new guidance on climate change allowances. This guidance includes a range of allowances for each river basin district and directions for use of peak allowances in each flood zone.
https://www.gov.uk/guidance/flood-risk-assessments-climate-change-allowances

This update supersedes the previous allowances and applies to all developments not already submitted for planning.

Water Environment maintains good relationships with Environment Agency staff and will continue to work together to advise our clients throughout this period of transition