Thank you all for your assistance and apologies for not having posted earlier, but life is never simple.
Eventually contacted the AustralianWar Memorial, Canberra, for assistance with the rifle identification and informed it was of cultural significance.
So, as one should, it was donated to the AWM in late June 2022.
It is with considerable pride, as a citizen of the Commonwealth, that the Veldt carbine will now continue its life in the hands of our nations military historical curators. This piece is a fine representation of the second Boer war. It is planned to continue researching the rifle both by the AWM curators and myself.