It forms one long boundary of elongated Kensal Green Cemetery, a Grade I diversely wooded site of 72 acres featuring two conservation areas and grave memorials such as to Brunel and two British Princes; this continues with St Mary's Roman Catholic Cemetery where the interred include Mary Seacole, two Cardinals, a Bonaparte and two Polish leading spies against Nazi Germany: Andrzej Kowerski (aka Andrew Kennedy) and Krystyna Skarbek (aka Christine Granville).