And just to add to everyone's tales of outside toilets !! We lived in a regular terrace house from mid 1960's that had at one time like all others have an outside toilet just at the end of the kitchen outside wall. However, by the time my Parents rented it the toilet pan had been 'turned around' to face the other way, original doorway bricked up and another door had been knocked through from the end of the kitchen..so it then became classed 'with indoor toilet'.
Amazingly, there was no bathroom at all or space for one and the only heating was a coal fire in the middle room. We on