Line the base of a round spring form tin with baking paper. You could also use a straight sided loaf tin for this if you wished.
For each layer (choose any order you like) place all ingredients into Thermo bowl and blend 20-30 sec/speed 8 until well blended. Times will vary slightly with each layer depending on density of frozen berries etc.
Pour each layer in and freeze for at least 2 hours before proceeding with the next layer.
To serve, remove from tin and cut into slices.