Sherlock nods politely to Keeley's welcome. "You as well." The grunt from Roy earns a slight raise of the eyebrows, but Sherlock nods to him as well. The anti-social gruffness is something Sherlock can understand.

When Keeley comes in for the hug Joan beams at her and returns the hug as best she can. "Hey Keeley! It's so good to see you!"