Prepare the first 2 jellies according to the instructions on the package.
Grease a ring cake tin with a drizzle of oil, spread well around the edges and center. Pour the first jelly mixture into the tin and let it chill in the fridge until firm.
Prepare the other 2 jellies and fully dissolve them. In a blender, add a pack of table cream, the dissolved jelly mixture, add another pack of table cream and blend until combined. Pour this mixture into the tin.
Let it chill in the fridge for 2 to 3 hours.