Looking at the energy data for W1S, this Westminster district scores an average of 70 out of 100, placing it around the national average. Compared to the national average of 67, that puts W1S around the norm for England and Wales. The most common rating band is C, with 30.3% of homes rated A or B and 54.0% in the C or D bands. Meanwhile, 2.8% of homes sit in the F or G bands — the least efficient categories. 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 92% of all certificated properties — a distinctly urban profile. Around 35% of properties are owner-occupied , while 60% are privately rented . That high proportion of rental homes matters — landlords in W1S must comply with the Minimum Energy Efficiency Standards (MEES), which currently require at least an EPC E rating. Properties rated F or G cannot legally be let. 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 70 to 77 — a 7-point jump that would lift the typical rating to C. If you live in W1S 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.