Hello! I’m Gladstone, a charming, 18 month-old Domestic Short Hair (which makes me a moggie). I recently moved into my new home at Her Majesty’s Treasury, where I’ll be tackling their mice problem. The civil servants who work there adopted me from @batterseadogsandcatshome, and I’ve been settling into public service life for a couple of weeks. #publicservice #purrstrings A photo posted by Gladstone (@treasury_cat) on Jul 29, 2016 at 1:24am PDT Subscribe | UPI Odd Newsletter Subscribe LONDON, July 29 (UPI) -- The British Treasury has joined Downing Street and the Foreign Office in naming a rescue cat to the office of Chief Mouser. Gladstone the cat will join longtime government employee Larry and fellow new addition Palmerston in defending Britain's government offices from mice. Advertisement "Hello! I'm Gladstone, a charming, 18 month-old Domestic Short Hair (which makes me a moggie)," he wrote in an introductory Instagram post. "I recently moved into my new home at Her Majesty's Treasury, where I'll be tackling their mice problem." Like his predecessors, the newest Chief Mouser was adopted as a stray from Battersea Dogs & Cats Home. Gladstone's addition could add some stress to the already strained relationship between Palmerston and Larry, who was sent to the vet in what the BBC reported may have been the result of a scuffle between the two incumbent mousers. Treasury staff appeared to show awareness of the possibility of a scuffle as Gladstone was photographed inside his carrier on his first day in the building. "The humans had to keep me in this cage in case I ran down the street and tormented some other mouser called 'Larry'. Personally, I've never heard of him," the caption read. Advertisement Me on my first day at my new home. The humans had to keep me in this cage in case I ran down the street and tormented some other mouser called “Larry”. Personally, I’ve never heard of him. #movingday A photo posted by Gladstone (@treasury_cat) on Jul 29, 2016 at 1:33am PDT Read More Rat-catching cat to remain in U.K. government building after prime minister change 'The Cat in the Hat' announces presidential run at Dr. Seuss' childhood home Nationwide shares the 10 wackiest dog and cat names of 2016