Use of Guy Ant 15cwt trucks in Western Desert - 7 Armoured Division

I have been trying to identify any photographs of documented use of Guy Ant 15cwt trucks in 7 Armoured Division in the period 1939 to early 1941. No luck so far and I couldn't find any photographs apart from one that looked like some Guy Ants with South African forces, but no ideas of where and when it was taken.
Can anyone help?
If this isn't the correct place, apologies.

Davey