If people in your parish feel they want to do something to stop this, then as and when a vacancy occurs, get 10 or more electorate to write in and request an election.
However, you will need people who want to stand. If there is one vacancy, and only one person stands they will be elected by default, if two people stand then the game is a foot. That way, if one 'crony' is put forward by the drinking club and one non-crony stands, then you (the electorate) have the option to stop it.
Then repeat for each vacancy that comes up.....no councillor can block a legally elected councillor!