In a tweet shared by Chief foreign correspondent of People Magazine, Simon Perry, we see the parking sign suspending vehicles from parking on South Wharf Road from April 9 to April 30.
However, it's thought that Catherine isn't due to give birth until mid-late April - so there's likely to be a bit of a wait yet.
In his tweet, Ship also confirmed Middleton would be giving birth to baby number three in the Lindo Wing at St. Mary's Hospital, an NHS hospital in Paddington, in the City of Westminster, London, where Prince George and Princess Charlotte were both born.
With father William - a future king - one day set to be Head of the Church of England, the royal baby must be welcomed into the Christian faith.
Lindo Wing At St Mary's Hospital Preparing For Duchess Of Cambridge To Give Birth
Kate Middleton is due SO SOON!
But if the Duke and Duchess welcome a little boy, Charlotte will be the first ever female member of the royal family to retain her position in the line of succession to the throne. Next, the public will hear when Kate has given birth.
Let the countdown officially began! For Charlotte, the baby's arrival will be especially significant if it turns out to be a boy.
The duke and duchess of Cambridge announced they were expecting a sibling for Charlotte and George last September, and ever since the princess has raised the sartorial stakes when it comes to maternity fashion. The hospital itself is also doing some sprucing up; the black railings alongside the famous steps, where William and Kate will appear for photo ops with their third baby, have been given a fresh lick of paint.
The Palace also announces William is to make a solo trip to Finland. Keep in mind though, if the birth happens in the middle of the night, Kensington Palace will not make any announcement before 9 a.m. United Kingdom time (4 a.m. EST).
Inside the hospital, Kate will stay at an en suite room, which provides "a modern, homely environment in which to start your new or expanded family", according to the hospital's website.