Choc& Orange Cheesecake

• 5 fl double cream
• 1 reserved cream mandarin orange segments melted chocolate
• 250 gr chocolate (plain)
• 450 ml full-fat cream cheese
• 190 gr chocolate digestive biscuits
• 120 gr soft (light)
• 55 gr butter
• 45 ml orange juice
• 14 gr sachet of gelatine