They may not have titles or carry out any duties - but Zara and Mike Tindall have proved to be some of the most popular members of the Royal Family.
The in-demand married couple has signed several big money deals with Zara - a granddaughter of the late Queen - endorsing brands such as Rolex and Land Rover and former rugby player Mike making reality TV appearances. Earlier this month it was reported that Mike, 43, is set for more TV exposure with a stint in the jungle on ITV hit show I'm A Celebrity... Get Me Out Of Here.