Cranberry and cinnamon cake

Needed to make something quick for tea today, as my new neighbour is coming for a cuppa. This is a recipe I've been meaning to do for ages, so today's the day!
It's out of my handwritten notebook, so presume it's from a magazine or a friend.

175g soft margarine or butter[softened]
175g soft brown sugar
2 eggs
200g sr flour
1 heaped tspn cinnamon
75g dried cranberries
rind and juice of 1 orange
demerara sugar for the top

preheat oven 180C/gas5.
Line a tin 33x23 cm.

Beat the margarine/butter with the sugar.
Add the eggs and beat together.
Add the cinnamon to the flour and fold into the mixture.
Finally, add the cranberries, orange juice and rind. Mix to a dropping consistency.
Put into the tin and bake for about 25mins.
Cool on a wire rack and sprinkle with demerara sugar.

This cake freezes well, so you can cut it into slices and freeze them in a suitable container.

I think it would taste good with an orange flavoured icing.