Thanks very much Shirley, I really appreciate you looking that up.
There was always rumours that there was an accidental death involving horses in this line of the family, thats been a great help, it's now obvious it wasn't Alfred as we have his cause of death.
This also lists Alfred's occupation as Cook so most likely the records relating to the Alfred Gretton in South African police aren't his.
Thanks again
Alasdair