In Brubakers Emma Frost story where Xavier tried to recruit her for the 3rd time Shaw and all the Hellfire Club men wore Psi-Blockers.
In Matt Fractions Namor Team Up it was stated he kept telepath close by to prevent a psychic ambush.
In Mike Carey X-Men Legacy?? issue with the funeral and Shaw turns up with an i image inducer he has a psychic blocker that keeps Xavier out while saying something catty. And then give my regards to Emma.
In Leah Williams issue I can't remember.