I think breeze blocks in kitchens are very important, both at the top and bottom of an outside wall, as they can prevent a build up of gas.
Most flats in the estate have gas supplies and even though most modern appliances have all sorts of safety measures built in, the breeze blocks still give a steady flow of air around our kitchens.
In some ground floor flats broken breeze blocks allowed pests into flats. I have noticed that most bottom breeze blocks in ground floor flats in Rosebery House have been made much smaller; also top breeze blocks were covered with kitchen cupboards; but will meet with a building inspector today to discuss the issue further.
Each resident should check whether their breeze blocks allow the air venting in their kitchens. In many cases the bottom breeze blocks vent the area behind the kitchen wall where gas cookers are located.