01 - In a large mixing bowl, combine the bread flour, caster sugar, yeast, salt, cinnamon, allspice, and nutmeg. Stir in orange zest and currants until evenly distributed.
02 - Create a well in the center of the dry mixture. Add the softened butter, lukewarm milk, and eggs. Mix thoroughly to form a sticky, cohesive dough.
03 - Knead the dough on a lightly floured surface for 10 minutes by hand, or use a stand mixer with a dough hook attachment for 6–7 minutes, until the dough becomes smooth and elastic.
04 - Place the dough in a lightly greased bowl, cover with plastic wrap or a clean towel, and let rise in a warm, draft-free area until doubled in size, approximately 1 hour.
05 - Punch down the risen dough to release air. Divide into 12 equal portions and shape each into a smooth ball. Arrange on a parchment-lined baking sheet with slight spacing between buns.
06 - Cover the buns loosely with a clean towel and let rise for 30–40 minutes until puffy and visibly expanded.
07 - Preheat the oven to 400°F (200°C).
08 - Mix the plain flour and water to form a thick, pipeable paste. Transfer to a piping bag or small plastic bag with the corner snipped off.
09 - Pipe a neat cross shape over the top of each risen bun using the flour paste.
10 - Bake for 20–25 minutes until golden brown and cooked through.
11 - While buns bake, gently heat the apricot jam and water in a small saucepan until melted and smooth. Strain through a fine mesh sieve to remove any fruit pieces.
12 - Immediately brush the hot buns with the warm glaze after removing from the oven. Transfer to a wire rack and allow to cool completely.