Preheat the oven to 180 deg fan assisted. Grease and line a 10 inch (25cm) x 8 inch (20cm) tray bake tin with baking parchment or greaseproof paper.
Using an electric mixer, beat together the butter and sugar until light and fluffy. Scraping down the sides of the bowl as you go along.
225 g caster sugar, 225 g butter softened
Gradually add the beaten eggs, adding a little flour into the mixture to help prevent curdling. Mix until well combined.
4 medium eggs
Beat in the remaining flour then add the lemon zest and mix until well combined. Pour the cake mixture evenly into the prepared baking tin.
225 g Self raising flour, Zest of 2 Lemons
Bake in the centre of the oven for 25 mins, or until baked, testing the centre of the cake with a skewer until it comes out clean.
While the cake is cooling, make the Lemon drizzle. Mix the sugar and lemon juice in a small bowl to a thick runny consistency. Note: For an extra tangy flavour, it's important to add the lemon drizzle to the warm cake, allowing it to seep through the soft sponge.
100 g caster or Granulated sugar, 3 tablespoons Lemon Juice
Using a cake skewer, make holes in the cake at various points and then pour the Lemon Drizzle topping over it.
Leave the cake to cool and the topping to set before slicing it into portions.
This cake tastes delicious while still slightly warm, but will keep well for a few days when kept in an airtight container.