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 in a moderate oven approximately 30 minutes or until browned and a skewer comes out clean.