I've extensively researched this memorial as part of a post-grad thesis on Thornycroft and would just like to add to the information already on the site. Contrary to the report in the Manchester Courier, although Captain Fisher was the model for the standing soldier, the prone soldier was the sculptor's long-term model, Orazio Cervi. Some of the surviving preparatory pencil sketches show that Thornycroft also used a Lieutenant Foster from one of the Indian regiments as a model, particularly for the uniforms and weapons. I also traced Thornycroft's original portrait bust of Fisher to his great-great-grandson; it was sent to Fisher's widow by the sculptor and passed to his only child, a daughter. It has never been publicly displayed.
There was also some confusion about whether the memorial actually depicts the two Boer War VC winners, Privates Pitt and Scott. My evidence suggests that they likely modelled for John Cassidy, the 'local' Irish born sculptor (who was unsuccessful in his bid for the commission) but certainly not for Thornycroft.I was able to trace Cassidy's (now lost) work through the Royal Academy archives and the Manchester Academy of Fine Arts; it was also referred to as 'Defending the Flag' in reference to the Ladysmith incident.
This is a massively underrated example of Thornycroft's work (he died in 1925) and it's one of his last major public monuments. It also represents an important ideological shift in public memorials, celebrating the serving soldiers rather than the officer class and in that it captures the mood of the time. We often forget that the Boer War was a pivotal point in British military and political history. It effected changes which we now ascribe to WW1 instead; everything from the adoption of khaki, to changes in tactics and logistics and the reinvention of the British soldier as a hero rather than miscreant.