It is set to be one of the most eclectic congregations in Royal wedding history, from Her Majesty the Queen to American television stars.

But anyone not quite up to speed on their minor Royalty, lifestyle bloggers and stars of Suits need not worry, as broadcasters use “world-first” recognition technology to identify Prince Harry and Meghan Markle’s friends and family.

Sky News is to create a “Who’s Who” function for its coverage of the Royal wedding, using bespoke software to name guests as they walk into St George’s Chapel, and provide details about how they know the couple.

The “Royal Wedding: Who’s Who Live” function, available on an app, will offer onscreen captions and graphics to explain the wide range of attendees.

Kensington Palace will not provide a full guest list for the wedding, which is not a state occasion.