As Nan and Kitty are at Lambeth Bridge, looking towards the Houses of Parliament, they would be seeing the lights of the Victoria Embankment.
The Houses of Parliament, in the Palace of Westminster, are situated on the north bank of the River Thames.
Richmond is a suburban town in southwest London, situated on the banks of the River Thames.
The opening lines of the song If Ever I Cease to Love, written by George Leybourne in 1871.
This song now has associations with the New Orleans Mardi Gras as it is the signature tune of the New Orleans Carnival Krewe* known as the Rex Krewe, founded in 1872.
*an organisation that puts on a parade, or arranges a ball, for a carnival.
Listen on Spotify to an instrumental version of If Ever I Cease to Love.
As mentioned previously, he was a Lion Comique, the author of the song Champagne Charlie, and arch-rival of the Great Vance.
He also wrote the lyrics for the song The Daring Young Man on the Flying Trapeze.
The New Cut was the former name of the London street now called The Cut.
It runs from Waterloo Road in the west to Blackfriars Road in the East, and is the site of both the Old Vic and Young Vic Theatres.
It is not clear to which song this refers.
Camberwell is an area of south London in the London Borough of Southwark.
Follow this link to read more about music halls in Camberwell.