In a large bowl mix together flour, yeast and sugar.
Add the warm milk, melted butter and beaten egg to this mixture and combine until all the ingredients are mixed together.
Dust a work surface with flour and tip the mixture onto it.
Knead the dough until it feels smooth and elastic.
Place the dough into a large bowl, cover and leave to rest in a warm place for an hour.
After an hour, roll out the dough to an area about 30 by 45cm with a thickness of around 5cm
Spread the lemon curd, around 5 tbsps, over the dough.
Sprinkle the sultanas over the lemon curd.
Roll the dough up lengthways from the shortest side, like a Swiss roll.
With the dough shaped like a log, slice into equal-sized buns.
Place the buns onto a lined baking tray.
Leave to prove for 45 mins.
Heat the oven to 180C/160C fan/Gas Mark 4.
Bake for 20 mins, or until the buns look golden brown.
Remove from the oven and leave to cool.
Whilst cooling, sieve the icing sugar and mix with 3 tbsp water until a thick, white icing forms.
Spread the icing on top of the buns with the back of a spoon.
Place a cherry in the middle of each one.