"I don't often speak about you, it's true." Mycroft smiled, faintly amused. "And you've not given me very much cause. A few dozen migraines, of course, but so long as your name stays out of the way of mine...I can worry about your cd choices for my own reasons but you ARE a big laddie. While I dislike your choices, I cannot fault you for your dedication to them."
As for that, it got an eyebrow. "You may be quite surprised one day, if you do need help."
If Sherr did know how many diversions Mycroft had placed in the path of his brother's being investigated alone., or how many reported issues or suspicious reports had disappeared, never to be seen again, well.... He would be upset to say the least, so Mycroft kept his silence there.
As for the last, he reached up, patting Sherr's cheek just a little. "Mummy misses you, you know. May I tell her you are doing well? She does worry for you."