Queen Elizabeth II, who turns 90 in April, carried out 306 engagements in Britain last year, a tally in The Times newspaper showed Friday. The queen, who became Britain’s longest serving monarch in September after more than 63 years, also conducted 35 engagements abroad, having paid state visits to Germany and Malta.

It was a state visit that for many sparked memories of another nearly 30 years ago, when William’s parents Charles and Diana, then Prince and Princess of Wales, came to the country for five days of pomp and pressing the flesh in 1986.

On Sunday evening, Prince William arrives in Beijing at the start of a three day visit to China.  At state level, the objective is to promote brand Britain, and at a personal level, it's an opportunity to talk about his abiding passion: elephant protection.