Preheat oven to 170*C. Sieve together flour, baking soda and salt into a bowl.
In a saucepan, combine margarine, sugar and water. Bring to a boil, stirring until the sugar has dissolved.
Draw saucepan off heat, add chocolate and vanilla extract. Stir until melted
Beat in eggs, one at a time. Stir in flour mixture and glacé cherries.
Pour into greased pan. Place into oven and bake for 20minutes. Allow to cool then cut into pieces.