Thanks for all the posts guys they were all much appreciated. Riley seems to have settled a little, or maybe that's just wishful thinking as I did get another small bite this morning.
He already thinks that he is Lord of all he surveys Masque so I dead to think how much of a dictator he will become once he gets a shed load of confidence.
Derek the taser idea does look as though it may work but I really wanted a live cat at the end of this taming period and I fear the RSPCA may take a dim view of my using one.
Doc considering the animal population that Derek has had to deal with in the past I am sure that he has considered using a taser at times but use one on Riley ... never. Riley would have him for lunch if he attempted such a thing.
One last bit of self indulgence on my part. A photo I managed to take this morning. LOL I'm back to being a boring old cat woman again.

Sorry.