I looked on the 1901 for John Bradfords born c1856 with a similar occupation
There is this one in Croydon
ref RG13/639/26/44
John Bradford, age 45, head, Carrier Carman, born Berks., Sunningdale
Caroline Bradford, age 44, wife, born Dorset, Fontmell Magna
Frederick B Bradford, age 9, son, born Surrey Croydon
now the interesting thing about this is that there is also this entry on freebmd
Death Jun Q 1908 Croydon
Caroline Bradford, age 51
I found this marriage Sep Q 1906 Lambeth 1d 824
Between Margaret Alice L Green
To either Henry DAY or John Vinecombe
In 1901 there is this lady In Lambeth
RG13/413/45/18
Margaret A L Green, age 22, female servant, born Welborne Norfolk
Birth ref Dec Q 1879 Forehoe 4b/181
It might be worth discovering if the marriage in Lambeth was to a Henry Day? One of my great great grandmothers kept forgetting which name she married under. She alternated surnames with every child!
Hope this of some use.
Heather