Royal staff were forced to call pest control team to deal with the rodent infestation. Workers reportedly often complained about seeing rats and mice in the kitchens. A source told the newspaper: “Rats have been spotted around the outside of the kitchen areas which clearly isn’t ideal. Staff in the lower quarters especially have become quite used to seeing little brown mice tearing along the corridors.
“There isn’t a huge amount that can be done.”
The Sun reported that officials have given palace staff basic training too help deal with the rodent problem.
This includes shutting cupboard doors and sweeping away bits of food.
Rats are said to inhabit very old buildings like the Palace, which dates back to 1703.
Just a couple of miles away in Eaton Square, a rat infestation has also been reported.
Some of the homes are worth £70 million and are owned by Joan Collins and the Duke of Westminster.
The rat problem has been blamed on ongoing building work.
Ms Collins said he had to move of her £3 million home and live in Claridge’s due to the building work.
The Duke of Westminster Grosvenor Estate is also a target for rodents as it dates back to the late 17th century.
US President Donald Trump was unable to stay at the Queen’s main residence during his state visit this month, due to renovation work in the East Wing.
Buckingham Palace has been contacted by Express.co.uk.