Owl says: bottoms are obviously a particular interest for Swire:

… “There is a sense that, in the present febrile climate, whoever is the next leader must be highly experienced. Davis qualifies; so does Hammond, who before his present job was foreign secretary and defence secretary, and who has belatedly displayed a mind of his own since May was hobbled.
Hugo Swire, a minister of state under Hammond in the Foreign Office, said of him: “He’s got bottom. He was very good to work for. He is an homme sérieux. I liked him very much and he would calm things down.” …
http://www.newstatesman.com/politics/uk/2017/06/humbling-theresa-may