The religious creed register is also on ancestry.
Maria Slatford, born 1852, admitted 4 May (1920) from H.H.I (Highgate Hill Infirmary),
creed Church of England, discharged OR (own request) 27.7.21
The A+D register with her discharge on the 27 July 1921 is there (she is transcribed by ancestry as Maud Stafford)
They have Boards Orders with Maria indexed (I think, from memory) on folio 167, but the microfilm runs out before the register does, and I'm not sure if ancestry have the rest of it up.
Once upon a time we could have seen it at home on FamilySearch, but they have now removed London records
St. John's Road Workhouse weekly admissions and orders of the board, March 1920 (from folio #115)-February 1921.
Ditto Highgate Hill Infirmary (though there are some records on ancestry, they may not go far enough?)