Prince William turns 35: How the royal is reshaping his role

William is expected to celebrate his birthday privately with family.

William's and Kate's first priority has been to shield their children, George and Charlotte, from the media so they can enjoy as normal a childhood as possible.

Recognizing the public's interest in them, however, William and Kate have also slowly been introducing George and Charlotte to public life, most recently taking them to the queen's official birthday celebration, Trooping the Colour, last weekend.

Prince George, who will turn 4 in July, accompanied his parents to the Royal International Air Tattoo last July, and he and Charlotte, 2, traveled with their parents on an eight-day tour of Canada last September.

Later this summer, William will leave his job as an air ambulance pilot with the East Anglia Air Ambulance as he continues to take on more royal duties to support the queen, who is still very active at 91 but relying on her children and grandchildren for longer royal trips. He and Kate will also "increasingly base" their family in London, according to a statement issued by Kensington Palace in January.

The move from the family's primary residence, Anmer Hall in Norfolk, to their apartment in Kensington Palace will also come as Prince George will start primary school at Thomas's School in Battersea in the fall.

William -- who with Harry has taken up charitable initiatives like homelessness and HIV awareness pioneered by Princess Diana -- used his platform as an advocate for mental health awareness to open up publicly about the death of his mom and its impact on him and his family.

"I am in a better place about it than I have been for a long time, where I can talk about her more openly, talk about her more honestly, and I can remember her better, and publicly talk about her better,” William told GQ magazine in an interview published in May. "It has taken me almost 20 years to get to that stage. I still find it difficult now because at the time it was so raw."

More recently, William accompanied Queen Elizabeth last week to meet with victims of the Grenfell Tower fire in London. At one point William embraced an emotional woman who was desperate to find her missing husband.

Earlier this month, William made another unannounced visit, this time to meet with survivors and first responders of the Manchester Arena terror attack that killed 22 people.