Your post was very enlightening.
I shall endeavour to give "Pussy Cat" more time and space to become adjusted to its new surroundings.
Just one thing though.
I am presently having to coax the cat to go outside (in the back garden).
If I go outside, the cat usually will follow.
However, on its own (with the back door open), the cat just doesn't want to know.
Really strange behaviour IMO, but I'll give it more time.