SJA Checklist backlog

THE LAST SONTARAN

Crowds of people walking through London under alien influence: No.
Tie-in with Doctor Who story: Check. Direct sequel to "The Sontaran Strategem"/"The Poisoned Sky."
Girl protagonist's mum is annoying: Check, though less so than usual, and she does do something nicely ballsy too.
Mobile phone as plot device: Check.
Luke says something so daft that you have to wonder how he gets through life without being mercilessly bullied: Can't remember, so I'll give it a non-check benefit of the doubt.
Sonic lipstick: Check.
Wristwatch scanner: Check.
One or more of Sarah's companions falling under alien influence: Semi-check: it's not the companion but the guest star.

DAY OF THE CLOWN

Crowds of people walking through London under alien influence: Huge great check.
Tie-in with Doctor Who story: Semi-check, in that there are continued in-joke references to "The Greatest Show in the Galaxy" (and one to "The Celestial Toymaker").
Girl protagonist's mum is annoying: Check, and looking set to check that box for many episodes to come.
Mobile phone as plot device: Sigh... check.
Luke says something so daft that you have to wonder how he gets through life without being mercilessly bullied: Check.
Sonic lipstick: Check.
Wristwatch scanner: Check.
One or more of Sarah's companions falling under alien influence: Check, or perhaps two half-checks: Rani and Clive are not influenced by the clown, but targeted by it, and Luke isn't mentally influenced by the clown, but is kidnapped by it.