Best Ever Sticky Toffee Pudding

This is Simon Hodginson's. Nigella's is good too.
She does a magic one where you pour on boiling water and the miracle sauce appears

175g(6oz dates chopped)
1 rounded tsp bicarbonate soda
50g/2oz melted butter
Pinch salt
75g/21/2oz Demerara sugar
75g/21/2oz molasses sugar
2eggs
175/6oz self raising flour
1 tsp vanilla essence
Butter for greasing

For sticky toffee topping
250ml/9 fl oz double cream
80g/3oz butter
80g/3 oz molasses sugar

For the extra sauce
300/10fl oz whipping cream
50g/2oz molasses
50g/2oz butter
Double cream to serve

Preheat oven to 180C/350FGas 4
Pour 275ml/10 fl oz boiling water into a large mixing bowl and add the dates.
Stir and set aside until lukewarm
Add all the other ingredients and mix .
Blend until smooth and then bake in buttered dish for 40 minutes

Make topping and sauce by heating ingredients together in separate pans .
Pour the topping over the cooked pudding.
Serve the extra sauce separately