Yes, saw them hanging around today as well. In fact one was TRL, the other TfL.

They seemed to be generally looking at maps and staring up side roads (saw them checking our Sunderland Road from the corner of Waldram Park Rd.

I wanted to get hold of them to complain about the height of the trees on the South Circular (causing some structural issues to my house!!) but they'd already moved on and I wasn't about to give chase.