The Duke and Duchess of Sussex have issued a legal warning to the media objecting to the publication of photos of Meghan walking with baby Archie.
The images of the Duchess emerged on Monday morning and showed her walking her two dogs with her son in a baby sling in a park in Vancouver.
The warning came after the Duke of Sussex was reunited with his wife in Canada 10 days after the family parted ways for Harry and Meghan's exit to be agreed with the Royal Family.
Photographs showed Prince Harry walking across the tarmac after arriving on a flight on Vancouver Island.
In a notice sent to the UK press, the couple's legal team say the images of the Duchess and Archie were obtained by photographers "hiding in the bushes and spying on her [Meghan]".
Schillings, the Sussexes' legal representation, said the incident follows "a spate of unacceptable paparazzi behaviour" which they say includes the use of "long range lenses" to try and photograph the couple in their home.
The notice warned the UK press, TV and photo agencies against using the photographs.
Harry has repeatedly compared the treatment of his wife at the hands of the press to that of his mother who was killed in a car crash in Paris while being chased by the paparazzi in 1997.
- Watch Prince Harry's Sentebale speech in full:
Earlier in the day Harry met Prime Minister Boris Johnson and world leaders at the UK-Africa Investment Summit in London, which is likely to be one of his few remaining official engagements before the Sussexes take their “leap of faith” and leave the monarchy in the spring.
The duke gave an emotional speech on Sunday night, saying he had “no other option” but to give up his official royal duties and forge a new life in Canada, where his wife and son are setting up home.
In the speech, Harry told invited guests: “What I want to make clear is we’re not walking away, and we certainly aren’t walking away from you.
“Our hope was to continue serving the Queen, the Commonwealth and my military associations, but without public funding. Unfortunately, that wasn’t possible.”
Harry and Meghan had wanted to remain as working royals, although not prominent members, and drop their public funding so they could become financially independent – a dual role many commentators said was fraught with problems.
Critics have accused the couple of turning their backs on the monarchy to enjoy the freedom of being able to take on commercial ventures.
Harry’s brother the Duke of Cambridge continues with a busy schedule of royal duties, a day after delivering a speech at a Buckingham Palace reception for summit delegates.
William movingly described how Africa was the place he visited after the death of his mother Diana, Princess of Wales, and where he proposed to his wife.
On Tuesday, William will attend a meeting of the United for Wildlife Taskforce at St James’s Palace. The duke, who is president of United for Wildlife, will make a speech during the session.
William is also due to hold audiences as part of the summit at St James’s Palace and Buckingham Palace.