Lune
The Lune has a number of sections that are suitable for WWR. The more technical sections are use by the GB team for training in the winter, and the gorge sections (including the strid) are only suitable for intermediate/advanced paddlers. River Lune footage starts at 3:00 in the following footage.
River Levels: https://flood-warning-information.service.gov.uk/station/5077?direction=u
Webcam: https://www.farsondigitalwatercams.com/locations/tebay