CREATE TABLE table_948 ("No." TEXT, "Name" TEXT, "Livery" TEXT, "Arrival" FLOAT, "Type" TEXT, "Configuration" TEXT, "Builder" TEXT, "Built" FLOAT, "Status" TEXT, "Location" TEXT)

Which number has Engine Shed as the location
SELECT "No." FROM table_948 WHERE "Location" = 'Engine shed'
SELECT "No." FROM "table_948" WHERE "Location" = 'Engine shed'