When it comes to energy performance, EC3 in City of London manages an average of 72 out of 100, placing it above the national average. Compared to the national average of 67, that puts EC3 above the norm for England and Wales. The most common rating band is C, with 0.0% of homes rated A or B and 100.0% in the C or D bands. In practical terms, a C rating suggests reasonably efficient homes, though there is still room for improvement on heating and insulation.

The area is characterised by flats. Flats alone account for 100% of all certificated properties — a distinctly urban profile. . A significant share of homes here rely on electric heating, which tends to be more expensive per unit of energy than gas.

There is genuine room for improvement here. If every recommended upgrade were carried out, the average score could climb from 72 to 73 — a 1-point jump that would lift the typical rating to C. If you live in EC3 and want to reduce your energy bills, start with our guide to loft insulation — it is one of the most cost-effective upgrades you can make.