UK royals TV head-to-head with Harry and Meghan

Britain's Queen and other royal family members are set to compete for the airwaves with Prince Harry and Meghan.

Queen Elizabeth will appear in a program broadcast on the same day that Oprah Winfrey's much-anticipated interview with the the monarch's grandson and his wife is aired.

The Queen will deliver a televised message on the importance of the Commonwealth as part of annual Commonwealth Day celebrations, which will be shown on the BBC on March 7, according to Westminster Abbey.

Harry’s brother William, his wife Kate and heir-to-the-throne Prince Charles will all appear in the program.

The show will air hours before Harry and Meghan's tell-all interview is broadcast on America's CBS network.

Oprah’s sit-down will be the first time the couple have spoken on camera since moving to the U.S.

Harry and Meghan attended the Commonwealth Day service at Westminster Abbey in person last year.

It was their final official royal engagement before they set up home in Los Angeles and stepped away from official duties.

Harry and Meghan have been making international headlines of late, after announcing that they are expecting a second child.

Last week, Buckingham Palace announced that the couple would not be returning, and that their treasured royal patronages would revert to the Queen, before being distributed among other family members.