On Wednesday, she will be joined by the Duke of York in east London to visit the offices of creative agency Mother and business social network site Yammer.

BBC: Queen to resume official engagements after illness

LinkedIn has taken its time to achieve stellar status but as comScore pointed out this week the business network site reached the number 2 spot for social networks in the USA in June (as measured by unique visitors), overtaking former social network darling, MySpace.

FORBES: Why LinkedIn Deserves to be The Number 1 Social Network