Following their exchange of vows, the couple's main titles became the Duke and Duchess of Cambridge.

BBC: Royal wedding: Thousands in Northern Ireland celebrate

But TV audiences did not witness an exchange of vows until 21 years later, when Prince Charles married Lady Diana Spencer.

BBC: Royal weddings: A brief history

It wasn't, strictly speaking, a wedding but it certainly looked and felt like one, with a highly traditional liturgy complete with choirs, familiar hymns, and an exchange of rings and vows.

ECONOMIST: The Anglican Communion