Could these be the same persons?
1931 Electoral Register
61 Acre Lane
Frederick George, Ethel Rose & N & C Shackleford (both female)
FG & ER can be found on 1927 Electoral Register Lambeth 61 Acre Lane
C Shackleford appears to have been born 1910 Lewisham
see FreeBMD
http://www.freebmd.org.uk/She’s with FG & ER Shackleford on 1947 Electoral Register at No. 59 Acre Lane
Miss C Shackleford Age: 37 (1911)
Address 59 Acre Lane Brixton SW 2
Departure Date: 27 Jan 1948
Port of Departure: Southampton, England
Destination Port: Cape Town, South Africa
Ship Name: Carnarvon Castle