Just been told by an inspector that
"you shouldn't keep your key in the lock as a child could unlock the door and get out (depsite their being a gate on living room door into hall), and keep it somewher eout of reach too so they can't reach it. And always keep your door locked"
So, despite beign told once by a fireman that the best place to keep your keys is int eh door so you cna get out easily if you ahve to, OFSTED say I have to have them out of sight, and door locked at all times.
They stay in lock, door locked. Stairgate on living room door into hall, on door from porch into hallway, at bottom step, top step etc.