I wonder if the blame for the patchy home form is going to be put squarely on

[Sir C]

I do find people work much harder if you berrate them though

Oh, certainly. It has been scientifically proven that athletes, when pushed close to their limits of effort, both physical and mental, receive a 10% boost in energy from massed despairing groans. One might imagine that encouragement might have a better physical and psychological effect, but you would be wrong.