Prince Charles is also the Duke of Cornwall and is currently using some of his land in Cornwall to help alleviate the UK's housing shortage. Helping him do that is DeLank granite quarry, which is supplying stone for the projects.

In fact, the Prince is making such a great contribution to alleviating the UK's housing shortage that DeLank Quarry is likely to be supplying his projects for the next 40 years.

To see how his project at Tregunnel Hill is coming along, Prince Charles has paid it a visit, where DeLank Quarry owner Adrian Phillips joined him to explain the benefits of using the home-grown granite, which is one of the hardest and most dense building stones in the world.

DeLank Quarry, near Bodmin, is supplying curbs, steps, window cills and heads and back edging for the Tregunnel Hill project. Adrian has been promoting the stone for local housebuilding since he took over the quarry in 2011 and the Prince's decision to use the stone is likely to give that aim a bit of a boost.

The promise of work on the Prince's projects well into the future has created an additional two jobs in the quarry, adding to the 15 people already working there. There is also the potential of more jobs being created when De Lank goes on to work at another Duchy land project at Nansledan.

Adrian told Natural Stone Specialist magazine: “Tregunnel Hill has been a very important project for Cornwall and we are very happy to have been involved in it. It’s been good for the county as well as giving work to local people.

"It’s massively important to see a project of this stature using locally sourced materials rather than choosing foreign imports and it’s great to work with people who appreciate the quality of our product and are prepared to invest in it.

"We have worked hard to keep costs down but it’s fantastic that Tregunnel Hill has been about quality and investing for the future. So often people opt for cheaper Chinese granite. Ours costs more initially but that’s because it’s 10 times harder and so more expensive to cut.

"The long term benefits are far greater, though, as it will last 10 times as long. It’s great to see the Tregunnel Hill project taking the long term view and investing in quality which will last.”

What the Prince said must, sadly, go unrecorded.