First Balmoral, now Buckingham Palace! Room used by the Royals before balcony appearances will open to the public for the first time at £75 a ticket - after the King announced he will allow fans into Balmoral Castle

Buckingham Palace's famous centre room where the Royal Family gather before appearances on the balcony is to open to the public for the first time. 

At a cost of £75, visitors will be able to take guided tours of the royal residence's east wing, the front façade which faces The Mall where crowds assemble on major occasions to see the monarchy. 

The palace's east wing was built between 1847-49 to accommodate Queen Victoria's growing family, and the development enclosed the former open horseshoe-shaped royal residence. 

The wing's principal floor will be open in July and August following more than five years of improvements, which were part of the ongoing £369million reservicing programme to update the palace's electrical cabling, plumbing and heating system over 10 years.

King George IV's opulent oriental-style seaside palace, the Royal Pavilion in Brighton, was sold to finance the building work and its contents, some of the finest ceramics and furniture in the Royal Collection, were moved to the east wing and inspired the Chinese-themed décor of its principal rooms. 

East wing tours are available only as part of a visit to the palace's state rooms costing £75 for adults. Admission to state rooms only is £35, with a £3 discount if booked in advance. 

Tours will take visitors through rooms and spaces including the principal corridor, which runs the length of the wing, where paintings by artists such as Thomas Gainsborough are hung. 

They will conclude in the centre room which leads on to the balcony but the public will not been able to step out on to it. 

Highlights in this room include a newly restored glass chandelier, shaped to resemble a lotus flower, and two Chinese 18th century imperial silk wall hangings, presented to Victoria by Guangxu, emperor of China, to mark her Diamond Jubilee in 1897. 

Tickets for a limited number of East Wing Highlights Tours, which will run daily from July 15 to August 31, go on sale from April 9. It comes after it was announced on Tuesday that the King will open the interior of Balmoral Castle to the public for the first time from July 1 until August 4. 

The tickets - priced at £100 or £150 with afternoon tea - sold out in less than 24 hours, with the website crashing due to demand at one point. The further opening up of both Balmoral and Buckingham Palace is said to be in line with the King's wish to open the doors of more official residences to the public.