M/S of a workman, Matty Miles, wheeling a barrow full of sacks of sand (or concrete mix?) across a very wet and muddy work site; panning right with him as he walks with some difficulty because the ground is so slippery; we see another man, Denis Kemp, at work on the Hoverbarrow. It is quite a large square-shaped machine, with a motor in the centre, a deep metal frame beneath and the air cushion below that.
He starts it up and the whole machine lifts up as the air cushion beneath inflates. He then moves a lever and the machine sinks back down to the ground, though the motor is still running. Matty appears with the old wheel barrow and they both load the sand bags onto the Hoverbarrow; high angle M/S as they load the bags evenly onto it; Denis moves a lever, the cushion inflates and he walks off, steering the barrow with two handles on the end of it.
As we see the barrow gliding smoothly along, commentator informs us that the barrow was designed by a builder, Edward (Ted) Drewery, and says "While ordinary wheelbarrows are practically bogged down, the Hoverbarrow glides over mud and potholes without effort, besides carrying a much greater load".
Denis steers it out of the gate of the work site and down a muddy road to where some houses are being built; C/U of a man bricklaying, who looks up as the barrow approaches. Denis deflates the air cushion while Matty unloads the sacks (he's suddenly reappeared from out of nowhere!), then inflates it and walks off again.
Note: there is a small newspaper article on file about the Hoverbarrow.