The response"..... well sort of Alan. After a detailed examination by the BCG we agreed with their proposal that 4 on each wheel was really a waste of time and money.
After a full risk assessment you really only needed 1 on each wheel and on every second wheel provide an additional one to give you a safety margin.
We got even more comfort by the fact that the in house trained mechanics were able to do it quicker when we awoke them from their fatigue driven sleep as they were used to this work practice from being trained in the depths of some third world country."
ps sorry could not help it after watching these events unfold.