Can't agree Harry! While in the past many have complained and aid they were 'looking' I have NEVER seen so may unhappy people seriously looking at options.
I know 3 who have resigned in the last 2 weeks and 4 more who will be out by November. That is 7 out of your 30 number.
I had never considered leaving and am now watching options closely. Not ready to jump hastily - but ready for when the right job comes around.
I suspect there are many who will be leaving and and even larger number, like me, who are open minded about leaving.
Unless they drop the hours to 80/month as it was previously and is the industry standard people will leave.