So Suzie was correct (as per usual) and our new girl cat is actually a boy. We took “her” to the vet’s and “he” is not microchipped (no surprises there really) but he is only 6-7 months old (which did surprise me). At some point in his short life he has taken a knock to his left pelvis, which means his tail does not work properly – it is rather typical that we should find ourselves with a non too graceful feline.
We are calling him “Mack” because he is a Mackerel Tabby. If we cannot dissuade him from pooping inside though he may have to go (joking).