Yes, don't forget to lubricate the back plate and wheel cylinder with bit of copper slip prior to installation.
Also, when refitting, fit the middle clip last!
Bit of a thread resurrection, but it might help someone doing the earlier Salisbury axle brakes. I came to do the biennial brake fluid replacement on my 4/4 and discovered the fluid level had dropped over the year. A brief investigation showed that (no surprise) that the rear brake cylinders had been weeping for some time. No worries, bung in a new set of cylinders, not an awful job.
When I came to remove the old ones, I found the middle clip on the driver's side was missing. The brakes had been working fine and I'd not noticed it, my guess is that when they were last installed the clip hadn't been driven in far enough for the protrusions on the lower clip had engaged. So I double-checked with the new clips that they fitted cleanly, a couple of strokes with a file ensured they would clip together neatly.
The 'correct' (at least, the way I did it) is Wheel cylinder in, upper and lower clips in, handbrake arm in, and as Arwyn says, middle clip in last of all.