The official reasoning is that it is not necessary to invite political leaders because Harry, 33, unlike his brother William, is not likely to become king.
An Indian-origin chef and social entrepreneur in the United Kingdom will be one of the guests at Prince Harry and Meghan Markle's wedding. "Windsor is getting ready to welcome the world to The Royal Wedding on May 19th with bunting, large screens and refreshments across the town".
The film will star Murray Fraser ("The Loch") as Prince Harry and Parisa Fitz-Henley ("Midnight Texas") as Meghan Markle.More news: Highlights from former FBI Director James Comey's new book
You'll also find other headlines about the royal family here.
Meghan's older half-siblings, Thomas Markle Jr and Samantha Markle, have reportedly not been invited.
A Kensington Palace spokesman said: "It has been decided that an official list of political leaders - both United Kingdom and global - is not required for Prince Harry and Ms Markle's wedding".
The future wife to Prince Harry appears to be crossing some to-do items off her list before the ceremony.More news: Stories Facebook to be a new feature
A host of glamorous pals including tennis supremo Serena Williams and Made in Chelsea's Millie Mackintosh are expected to attend the Royal Wedding.
Asked by Corden if she and David would be guests at Prince Harry and Meghan Markle's nuptials, the fashion designers replied: "I don't, I don't know". "I can't think of single reason", she said.
USA host James Cordon also revealed this week that Victoria and David Beckham are going. "It was a complete surprise", said Ginday, adding that she was "over the moon", Reuters reported.More news: Pro-Assad official: Targeted bases were evacuated on Russian warning