Written Question·Department for Transport·UIN 104956

Roads: Flood Control and Pollution

Tabled: 12 January 2026
Answered: 15 January 2026
Named Day

Question

Sarah Dyke

Liberal DemocratGlastonbury and Somerton

To ask the Secretary of State for Transport, what steps National Highways is taking to record the potential impact of historic drainage networks associated with major roads on (a) downstream flooding and (b) river pollution.

Answer

Simon Lightwood
National Highways’ (NH) standard practice is to report all flood events on the Strategic Road Network (SRN). This includes flood events within 200 metres of the SRN, or within 500 metres of a NH drainage asset. All such flood events are recorded in NH’s d...

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