Can anybody help?

This photo turned up as Sally Harding helped her mother move house. It is believed to have been taken around 1924. The boy on the pony is Sally’s father Fred Harding. One of the men on the horses is her grandfather who was at one time farm manager at Lagoon Hill where the photo may have been taken. Sally is hopeful that somebody may be able to confirm that it was taken at Lagoon Hill and identify some of the men on the horses.
If anybody can help please contact Mike, 3089 978 or beckett36@gmail.com