KING Charles has discovered how many organisations it takes to change a royal lightbulb — six.

His Majesty wants to make the 71 gas-powered lanterns in Buckingham Palace’s courtyards more energy efficient.

That would mean fitting them with new mantles to hold LED bulbs instead.

But before any work can be done, Palace aides must seek the views of Historic England, the Metropolitan Police, the Gardens Trust, the Royal Parks and the National Amenity Societies.

The application has to go through planning officials at Westminster Council.

The organisations were all notified of the plans and asked if they want to make any “comments or observations” by the end of the month before a decision is made.

A source said: “How many officials does it take to change a royal lightbulb? Far too many it seems!”

Replacing old gas powered lamps means that the Palace will fall in line with Government environmental aims.

The new illuminations are planned for the Forecourt and Ambassador’s Court within Buckingham Palace.

LED light bulbs last for much longer than regular bulbs, need little maintenance, and they have low energy consumption, which all mean lower energy bills for the King.