I have also seen an american car insurance ad (State Farm?) that uses an ericcson dial desk phone used as a wall phone.
Yup, it's State Farm, and yes, I cringe every time I see it.
I keep an eye out when I watch, but only look for something totally out of place...
I'm enjoying Endeavour - only 2 episodes in, and haven't noticed much "out of place" (lights, satellite, etc.) - yet... They seem do do a decent job with the cars, though the first episode had a lot more "wide shots" of vehicles in Cambridge - second episode so far is just a couple tighter shots just of the main cars...
Jim