Lambeth became part of the Metropolitan Police District in 1829 .
It was an elongated north - south parish with 2 miles ( 3.2 km ) of River Thames frontage opposite the cities of London and Westminster .
parish became part of the Metropolitan Police District in 1829 .
It was an elongated north - south parish with 2 miles ( 3.2 km ) of River Thames frontage opposite the cities of London and Westminster .