Something will continue on Wednesdays, although I am not certain what or where. If people turn up at the Jug something may still continue there, depending on the Landlord. There may be a transition period with a few pubs alternating, although this type of arrangement makes it awkward from a point of knowing where to go.
Information on sessions near the Selby area gets posted on this link Where the Folk R'We although I am not sure how quickly it gets updated.
Can't be more specific at present.
Geoff!