The London Nobody Knows (1969)

A glimpse at the off-the-beaten-track of England's capital city in the late 1960s, The London Nobody Knows (1967), stands in stark contrast to the international glamorous image of London as a center of innovation and art in the Swinging Sixties. Narrator James Mason—dapper and serious, wielding an umbrella—wanders through the crumbling relics of abandoned, once-grand theaters, speaks to the poor and indigent at a Salvation Army hostel, and takes us into the Holborn public lavatory that once boasted live goldfish in tanks to look at while urinating. "These fish don't live here now, of course," Mason comments off-handedly, gesturing with his brolly. "We just popped them in by way of illustration."
A glimpse at the off-the-beaten-track of England's capital city in the late 1960s, The London Nobody Knows (1967), stands in stark contrast to the international glamorous image of London as a center of innovation and art in the Swinging Sixties. Narrator James Mason—dapper and serious, wielding an umbrella—wanders through the crumbling relics of abandoned, once-grand theaters, speaks to the poor and indigent at a Salvation Army hostel, and takes us into the Holborn public lavatory that once boasted live goldfish in tanks to look at while urinating. "These fish don't live here now, of course," Mason comments off-handedly, gesturing with his brolly. "We just popped them in by way of illustration."
https://www.theguardian.com/film/2003/nov/21/history