Steve.
I have already given an account of some aspects of the healthy state of folk song and dance activities in my post on 03 Nov 19 - 12:39 PM so rather than repeat that, could suggest that anyone interested has a look at the Facebook page for events in the Sussex area? It is at https://www.facebook.com/groups/folkdiary/ and has around 600 members.
I have just checked and counted 29 events in the county this week and I know that this is not a comprehensive list.