Pre-heat the oven to 160°C. Lightly grease a 6" pan and coat the inside with a few tablespoons of flour before tipping out the excess.
In a bowl, massage the blood orange zest into the sugar for one minute, then add the eggs and then using a stand mixer or electric hand whisk, whisk the mixture together for 3 minutes on a medium speed, until thicker and paler in consistency.
Pour in the cream and whisk again.
Remove the bowl from the mixer and scrape off any orange zest that may be stuck to the whisk. Add it back into the batter. Sift in the dry ingredients and gently whisk them in by hand.
Whisk in the oil just until you have a smooth batter.
Pour the mixture into the loaf tin. Bake for around 65-75 minutes or until a skewer comes out clean. The bake time may vary depending on your tin, so keep an eye on it.