1. Tip the icing sugar into a bowl, add the lemon zest and juice and stir until the sugar has dissolved. Add the cream to the bowl and then whisk until the mixture forms soft peaks. Fold in the crushed meringue.
2. Spoon a few teaspoons of lemon curd into the base of the loaf tin, then spoon on some of the cream mixture. Layer up small dollops of lemon curd and cream mixture. Cover the tin with cling film and freeze for at least 12 hours, or until it has frozen solid.
3. Remove the tin from the freezer and remove the cling film from the top. Upturn the loaf on to a serving plate and peel away the cling film. This dessert should be soft enough to slice straight from the freezer. It will also keep in freezer for up to 3 months.

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