Islington does not publish its Article 4 directions on planning.data.gov.uk, so for your conservation area you will need to ask the council, and until you hear back stick to the general rules for conservation areas. The areas here are dense, old and almost entirely on gas; heat pumps turn up only in ones and twos.
Dense housing on gas
Solid walls with no insulation in 67.1% of homes in the areas (across England's conservation areas, 48.7%), and on Calabria Road in 95% of 148. In East Canonbury a gas boiler stands in 95% of 1,570 homes, with two pumps. The largest zone, Barnsbury, holds 186 of the 990 listed buildings and 38 pumps across 4,321 homes.
Where pumps do get fitted
Of the 220 pumps in the EPC register as of November 2026, 49 fall within St Luke's with its 817 homes. Whether an address sits inside an area is visible on the area page or from the council. The rules on this site are national, current as of 21 October 2026; the planning decision rests with Islington council.