Well I'm not surprised you didn't post the first picture twice Nigel. Just look at it:
The tile at the top left is clearly not straight. For heavens sake, it looks like it's just leaning against the wall.
As for the other one in the far top left corner, where do I start? Its a different shape and even a completely different pattern. I think it is also a bit wonky. Going on my years of experience in this field I suspect you may find that the numpties have actually laid it upside down. Nigel, you have to watch these people, they can't be trusted with anything.
At this stage I'd probably just tear the house down and start again...
Nigel, happy new year to both you and Jan. The place looks fantastic mate, ideal as the holiday pad you had envisaged. Whilst I get the feeling you are itching to finish and leave the place, you must be well chuffed with the result.