Drainage and flooding issues

Hello, I am not sure if I have the correct department regarding my issue. I work for UK Power Networks, we have a large site at the entrance to the village of Walsoken we have been having flooding issues at our site and also at a small industrial site called 5 Star Cases Ltd. I have had a drainage company do a report on the issue here and one of the main areas identified was a small culvert/bridge on the main road going into Walsoken. The road is called Broadend Road, and the ditch runs from around our site and a large piece of land and then down to the roadside, at this point a blockage is stopping any water from running away from this area into the main drain. I am aware that we also have some work to do on our ditches but until the ditch in question is sorted it would be pointless for us to do any further work. I would be happy to meet someone out at the site to discuss the issue further if it would help. If your department is not the one I should be contacting could you please point me in the right direction.