Hi David,
Thank you for the information, you are obviously more knowlegeable about this event, I was not aware how relevant his war bars and clasps would be to my initial query.
Here is what I have regarding his awards from the Royal Sussex Regiment.
The Cape Colony bar was awarded to all troops who served in the state at any time between Oct 11 1899 and 31 May 1902.
The clasp for Johannesburg was awarded to all troops who on 31 May 1900 were north of an east west line through Klip River station and east of an east west line through Krugersdorp Station.
Clasp for Diamond Hill was given to all troops who on 11 and 12 June 1900 were east of a north south line through Silverton Siding and north of an east west line through Vlakfontein.
The clasp for Wettenberg was awarded to all troops who were within a specified area between Harrismith and Bethlehem between 1 and 29 July 1900. Harry was awarded all these decorations
Based on your information it would appear this may have been his last engagement and may have left for England in July 1900 and arriving after the census was taken. The archivist states that any surviving personal papers for him will be in Class WO97 at TNA, Kew, perhaps they may end up on line one day, from Australia it is a long way to come.
Tom