GOV.UK: Oil storage regulations and guidance for businesses
GOV.UK: Pollution prevention guidance (PPG) and replacement series
GOV.UK: Waste classification technical guidance (for spill waste disposal decisions)
Environment Agency (England): Updates and guidance (pollution incident topics)
Natural Resources Wales: Environmental permits and business guidance (Wales)
SEPA: Water pollution guidance (Scotland)
DAERA: Water and inland fisheries information (Northern Ireland)
COSHH Essentials: Practical control guidance for hazardous substances
HSE: COSHH (Control of Substances Hazardous to Health) overview
ECHA: C&L Inventory (chemical hazard classification reference)
ECHA: Poison Centres (PCN) information for hazardous mixtures
NFPA 704: Hazard identification system (hazard diamond reference)
HSE: Fire and explosion safety (relevant for flammable spill risks)
CAA: Dangerous goods guidance (useful for transport/packaging considerations)