I have had a quick look but I cannot find any of them on the 1921 Census , I went on FindMyPast and typed in all their names but nothing really stood out to me so I didn't purchase any as I could end up spending a lot of money. 
I am so confused with Frances Taylor/Morley and beginning to wonder if it was her daughter Francis Evelyn Taylor/Martin/Morley who married Percy Painter and as she did not know who her father she put Stephen Taylor as her father but he is really her uncle, making Stephen Taylor, occupation builder Frances Taylor/Morley's brother! Dates of birth for Frances Taylor/Morley range from 1879 to 1882.
This is just a theory.
Could this be Frances on Electoral Register in Lambeth?
Frances MorleyElectoral Date 1921
Street Address
15 St. Martin's RoadWard or Division/Constituency Lambeth
There are also Evans, Nesdale & Woodward surnames at the same address, if you use advanced search with that address on 1921c I can only see surnames Evans, Mesdale & Woodward

As N(M)esdale is the more unusual surname I checked
year 1920 Frances Morley is
not listed although
Frances Morley is listed at that address for years
1924/1925 but
not year
1926Could this be Percy & Frances (no middle name given for Frances

)
Percy & Frances PainterElectoral years 1924/1925
Street Address
114 Borough RoadWard or Division/Constituency Southwark
There is this entry on Free index 1921 St George’s Hanover Square & St Margaret & St John
Frances Morley 1883
Brixton, London, there doesn’t appear to be any other persons with surname Morley/Martin with her