will keep an eye on this, couple of us in our club started UKBR22 postal around 18 months or so ago, quickly followed by midlands league into which we now enter 4 teams.
Benchrest has been very good for our club, it has allowed a couple of the older shooters to get back into shooting after they have had to give up on smallbore prone, and we've had a couple of older guys join who wouldn't really have a lot to shoot competition wise if it wasn't for benchrest.

will be interested in the postal leagues when they start, pretty sure a few will want to enter.