If you regularly walk near the Lambrok or any of its tributary streams, keep a lookout for water voles. They are an important protected species and any planned development along the stream will need to take their presence into account.
If you see water voles or any signs that they are present, report your findings with photographs if possible to the Wiltshire and Swindon Biological Records Centre.
Here is a short video to show you what you are looking for and to help with identification.
Southwick Country Park Nature Reserve 
The more sightings reported the harder it will be to ignore our fast disappearing water voles.
We need to overwhelm WSBRC with sightings!