London Sustainable Drainage Proforma
From April 2019, London’s 33 Lead Local Flood Authorities (LLFAs) will introduce the London Sustainable Drainage Proforma. This proforma will be needed to accompany Sustainable Drainage strategies submitted with planning applications and will form part of planning application validation requirements.
The proforma sets a clear standard for the information that should be provided in a Sustainable Drainage strategy for major development in London referred to the Lead Local Flood Authority Officers. It is intended to ensure that key information is provided with the initial planning application, reducing the need to request additional information throughout the assessment process and preventing delays in approval.
This initiative is supported by the Greater London Authority (GLA) and the London Drainage Engineers’ Group (LoDEG) to encourage greater consistency in both the applications and the Lead Local Flood Authority information requests.
The proformas are available from London’s Local Authorities’ websites as well as through the links below. Please note the Excel documents have two tabs, the 'Cover page' and then the 'Proforma'. Please make sure it is the 'Proforma' tab that is submitted as part of the planning application.
Need a document on this page in an accessible format?
If you use assistive technology (such as a screen reader) and need a version of a PDF or other document on this page in a more accessible format, please get in touch via our online form and tell us which format you need.
It will also help us if you tell us which assistive technology you use. We’ll consider your request and get back to you in 5 working days.