There is what appears to be a 2 car stop board and under / overground roundels. None of the joint running lines between LUL and BR have 2 car trains (it isn't the joint station at Greenford which sees 2 car 165s) so I suspect it is an Overground station. I suppose it could be on the Southern and the boards are for 456s, but I suspect GOBLIN. Walthamstowe Queen's Road?