- Location
- Taplow
I'm pretty sure they are modern plastic. Thames Water owned part of the land in the 90s. Very strange as they put in a concrete road diagonally through one field. Was handy when we had issues with a farm gateway!If you have an old clay tile drainage system those things will destroy them as they aren't very deep. "Modern" plastic drains that were machine laid are usually a lot deeper and will be fine.