Huge thank you to all for those most useful replies. Interestingly, our house features in Ady1's link video (the view showing the sandscaping scheme display – that's our wall).
The various machines available are a 'boys' toys' Xmas list! … however, the wise counsels will prevail
Insurers first, (not hopeful), Council next (cash-strapped, so similar) and then to find a reliable 'man-who-can'. Our treasured long-term 'go-to' man isn't contactable so it will be search and hope.
Thank you all again, it has given much food for thought!
rgds
Bill