Preheat oven to 180℃/350℉.
Grease standard (23cm / 9") loaf tin and line with baking paper.
Soak fruit, bicarbonate soda, sugar and butter in boiling water for a couple of minutes or until slightly softened.
Toss in flour and nuts and mix. You don't even need to sift the flour. The mixture will be moderately runny.
Bake for approximately 35 minutes or until browned and a skewer comes out clean.
Leave to cool in tin for 15 minutes before turning out onto wire rack. Store in airtight container. You can freeze individual slices for lunchboxes.