Hi Taylor, I'm not sure about an earth rod being outside but I know there is one located under the floor as seen that located close to where the gas meter is located, it's entirely possible there is also one located outside as this by the main entrance to the property.
I'm not the most savvy when it comes to DIY and Electricity supplies so hoping those with the knowledge may take share a little of their time to help me understand the main power supply to my property. The property is a 1900's terrace, and the main cable supplying electricity to the property is...