Excellent Simon! Breaking that 100kg mark is a milestone in your achievements. Keep it up.
That 10% loss you are getting close to is important. That's the fat that's surrounding your vital organs. You'll be start reaping great health benefits from it.
Make hay while you can Simon, as you get to the sharp end it does slow down. I lost weight at about the rate you are doing now (it's easier for us guys). Mentally prepare yourself that it will get tougher as you get to the end. The downside of losing it so quickly is your skin may not be able to keep pace and become wrinkily and loose . I know of what I speak,
but that was my choice and I'll live with it.
Your initial goal was 90kg, have you reconsidered it? I don't know your stats so I may be off base here.