Preheat the oven to 180℃. Line a 2lb loaf tin
Combine the milk, oil and lemon juice and set aside
In a large bowl, mix together the flour, bicarbonate of soda, custard powder and salt. Stir in the sugar.
Pour the wet ingredients into the dry and stir to form a nice smooth batter. Stir in the golden syrup
Pour into the lined loaf tin and bake for 25-30 minutes until risen, golden and a knife comes out clean
As soon as it comes out of the oven, drizzle over the additional golden syrup and let it soak into the sponge