Put digestives in plastic bag and bash with rolling pin, till totally crumbled.

Put into bowl, add marg and mix till combined.

Press into base of cake tin, put to one side.

In a large bowl, which the cream till soft peaks form, put to one side.

In a medium bowl, whip cream cheese until loosened up, add the baileys and icing sugar and whip till combined.

Either grate or roughly chopped the chocolate (easier to chop as may melt when grating).

Gently whip together the cream, cheese mixture and chocolate till smooth.