I'm starting to be glad that I didn't play the Time Lords again given Doctor Who's numerous means of teleporting things. And transmat is apparently something the Time Lords ascended past needing when their universe was half its size. Or so they claim.

Granted, they can also just pick people out of transmat beams without harming them, so...

But yeah. One of the forms of particle transmission, basically teleportation, and they could just nab you mid-teleport.