Firstly take spring form cake tin and cover it with aluminium foil and set aside
Add the digestive biscuits in to a blender jar and blend it to fine powder
Now add the biscuits crumbs in to a mixing bowl, add melted butter and mix it well
Add the biscuits crumbs into spring form pan and press it using a spoon or using a back of cup press it really tight to the tin and place it in freezer for 10-15 minutes or until you prep the the filling
In a large mixing bowl take cream cheese, powdered sugar and beat it in a medium speed at 2 minutes or until smooth
Now add sour cream and beat it till combined say for 30 -40 seconds
Add Heavy cream and beat it again
Add in the eggs , lemon juice and vanilla essence and beat it for 1 minute in medium speed
Finally add 1 tbsp corn flour and mix it well do not over mix. Final cheese cake batter should be smooth without any lumps in it
Take the spring form pan and pour the cheese cake batter to it
Now place the spring form pan in a tray filled with hot water
Bake at 180 degree Celsius for 30 minutes and then reduce the temperature to 150 degree and bake for another 30 minutes and once the time is up, switch of the oven without opening the door and let it rest another 45 minutes inside the oven
Take the cheese cake from oven and let it sit in room temperature for 30 minutes and then cover it with cling sheet and place it in refrigerator for 4-6 hours or over night