It’s not yet 8.30am, but the Royal Van Lent Shipyard is a hive of activity.

Carpenters are carefully laying teak decking, engineers are threading a nest of cables through a boat skeleton, and someone is wondering whether paying €1,250 per bottle of Cristal champagne is excessive for a boat’s christening.

This isn’t any old name-giving ceremony: this Sunday, a mystery guest called “the VIP” will be on Kaag island in the Netherlands to name "superyacht 814", due for completion in spring 2019.

The 92m vessel, stretching as long as five double-decker buses, has six decks, a swimming pool, Jacuzzi, 12-person cinema, hospital, a mess for 30 crew members and – what else? – a helipad.

Business is cruising…