Donald Trump, the U.S. president, and his predecessor, Barack Obama, have not been invited to the 19 May ceremony, and Theresa May and other United Kingdom political leaders are not expected to attend in any official capacity, it is understood.
In an interview on The Nightly Show with Larry Wilmore in May that year, two months before Harry and Meghan first met, she described Trump (who was then a Republican candidate for the presidency) as "divisive" and "misogynistic".
Some 260 government officials from around the world attended Prince William's wedding to Kate Middleton, in 2011, but it seems the May 19 ceremony uniting his brother Prince Harry and Markle is going to be a much smaller affair.
Also Tuesday, Kensington Palace officials named some of the 1,200 members of the public who have been told they will be among the 2,640 people invited to the grounds of Windsor Castle for the big event. (AAP) Harry and Meghan don't have to invite world leaders to the wedding because of Harry's position in the succession to the throne.
It was during the games that Prince Harry and Markle went public with their relationship. Harry is now fifth in line for the throne and will be demoted to sixth once Middleton gives birth to her third child later this month.
She has chose to give her other ticket to grandmother Sharon Goodman, whose 15-year-old granddaughter Olivia Campbell-Hardy died in the bombing.
The guest list includes 30-year-old Philip Gillespie from Northern Ireland, who lost his leg in an IED incident in Afghanistan before raising funds for ABF The Soldiers' Charity.
The royal couple chose to instead invite members of the pubic to their wedding.
Zoe, of Penygraig, South Wales, said Harry called her "a role model" for her work with the Valley Kids charity which helps disadvantaged children and families.