Preheat the oven to 160˚C/320˚F
Mix the flour, oats and salt in a bowl.
In a small saucepan, melt the butter/margarine, sugars and golden syrup over a medium heat until the sugar is dissolved. Take off the heat and add the bicarbonate of soda.
Pour the butter/sugar over the flour/oats and stir to combine. Leave to cool slightly - it will thicken.
Place walnut sized spoonfuls of the mixture* on 2 baking sheets lined with baking paper, then flatten slightly with a fork.
Put in oven for 10-12 minutes until golden.
Leave on trays for a couple of minutes then transfer to a wire rack to cool completely. Once cool, melt the chocolate then drizzle over the biscuits.
Store in an airtight container.
*walnut sized should give you around 18, if you put slightly larger dessertspoonfuls - as I did for the photo - you will get 14