The track is currently closed as it's being resurfaced, so won't be open again until June / July time I think. The Wheelers sessions have fizzled out over the last few years mainly due to the cost of track hire and no longer being able to get ad-hoc, short notice sessions at a discounted rates; and numbers of participants, which means it is not sustainable to run regular sessions as before. There are plenty of members riding various track leagues though. As Mark says, post a question on FB if you can and someone who knows more about it than me might respond.