I did a search of the 1920 US census for Victoria with no last name using the birth and immigration years (+/- 2 years) from this thread and a birth place of England and found a John and Victoria Bowman in Monrovia, Los Angeles County, California. They both have an immigration year of 1913 and were born in England. Victoria was 32 and John was 34 and a chauffeur for a private family.
Using that information, I did a search for a John Bowman arriving in 1913 and lo and behold there was one on the same voyage as Victoria and he indicated he was joining his friend H.N. Tillcock of Pasadena.
The LDS website has a marriage for John Wilkin Bowman and Victoria Isabel Tillcock on 9 Jun 1914 in Los Angeles County:
http://www.rootschat.com/links/0d6p/John and Victoria are on the 1930 US census in Pasadena. John's occupation is the same as in 1920. There are no children listed with them on either the 1920 or 1930 census.
If you have access to American records on Ancestry there are images of John Bowman's Petition for Naturalization and Declaration of Intent in the Selected U.S. Naturalization Records - Original Documents, 1790-1974 database and there is a US passport application dated 1923 in John's name that was for himself and Victoria which includes a picture of them.
John Wilkin Bowman and Victoria Isabel Bowman sailed on the Empress of Scotland departing from Quebec and arriving in Southampton on 14 Jul 1923. They gave an address in Carshalton, Surrey as where they would be staying. They returned on the Laconia which arrived in New York on 24 Oct 1923.
The California death index has a death for a Victoria I Bowman who was born in England on 15 Jun 1887 and died 6 Dec 1964 in Orange County, Calfornia. I can't find a death for John so far.
Jacquie