Great British Baking Show Signature Chocolate Cake

I was recently asked to bake a chocolate cake for our friends birthday. I got the idea to make the GBBS signature choclate cake. I used a vanilla sponge as I did not want to overlaod on the chocolate. Not a problem for me the more chocolate the better. However, not everybody likes the intense chocolate cake ( I do not know what is wrong with them!) I used butter cream frosting and even if I say so myself I think I nailed it . The cake was a...