Clarendon House, where Tanya Adeola lived, was located on St James's Place in London. It was located within the bounds of the postal area E8 5LG. (TV: Nightvisiting)
Behind the scenes
The given postal code would place St James's Place in Hackney, which is no surprise, as she walks down a street in Hackney in For Tonight We Might Die, and Coal Hill Academy, in Shoreditch, is therefore also located in Hackney.