Planning policy and the National Planning Policy Framework sets out a number of key provisions relating to sustainable drainage systems (SuDS).
Planning Practice Guidance on sustainable drainage
Defra's Non-statutory technical standards for the design, maintenance and operation of sustainable drainage systems to drain surface water.
Industry guidance, published by the Local Authority SuDS Officer Organisation (LASOO)
CIRIA's SuDS Manual, the most comprehensive industry SuDS guidance is available in the UK and free to CIRIA members.