The attic hatch had to be widened to get the store into the attic:
Here it is in its final resting place, in the early stages of plumbing. The outer casing is a hardened foam resin insulation.
The pipework leads down to the right side of the rear chimney breast:
The reserve tank from which the store is filled:
And finally the front windows are essentially finished with their final colour, the painter has done a fantastic job. Note that the colour scheme of the house itself will be changed completely. (Light was fading and it was raining, better pictures coming soon):