I wonder if there are a few questions regarding this post. Name Arthur Davison, seems O.K. Father, Daniel, seems O.K. Mother, Isabel, perhaps, problematic. Perhaps it's Frances, (Fanny England). (2 Census's and army papers show mother as "Fanny") Service number, 170203, papers show what I would say is 170123.
Service length 4 days.
Regards
Malky