It is essential that work is done to improve understanding of the scale of surface water flood risk at a national and local level. In particular, we are concerned to hear evidence of surface and foul water flooding caused or exacerbated by the failure to adequately maintain drainage systems. It is difficult to determine the scale of this risk due to the lack of centralised information on the capacity of sewer systems. The Government should quantify the surface water element of its overall ambition for flood resilience. In its update on the Surface Water Management Action Plan, it should also explain how it will improve the collection and sharing of data on drainage and sewerage capacity.