The motorcyclist is said to be aged in his early 20s and was wearing light grey tracksuit bottoms with a double light blue stripe down each leg, a black jacket and black gloves which had plastic caps on the knuckles. He was also wearing a green and silver crash helmet.
The bike he was riding is described as a black and green off-road machine with Evo-Tech written on the front shocks.
More top news
Philippa has the latest weather update for the east
Philippa has the latest weather update for the west
A tarot card reader has been describing how a murderer confessed during a reading she was giving.