Did you toss the fruit in flour before adding to the mixture?
The flour makes the fruit"stick" to the mixture,and so prevents it from sinking to the bottom.
If you did flour the fruit,then either the oven temperature was incorrect,or your mixture was too liquid.
I bet it's the non flouring myself.
This is courtesy of my wife Elsie.
Alec.
yup, plus your oven was too hot. Turn the temperature down a little, and cook for longer wrap brown paper around the outside of the tin if you think it's going to burn, alse, like the other post said, wash and flour your fruit first, cut glace cherries in half.