I've just worked this out. After the 26th January and once 6099 becomes available with 6084 taking its place, Percy Main will have 3x spare B9TL's (6099, 6100 plus a spare C&C branded vehicle). Is the extra B9TL in place to help compensate with the Coaster PVR increase or is this a measure to improve the quality of service as well as a bit of forward planning incase a future PVR increase is required?