As mentioned in a separate thread and in order to provide a data point, I can confirm that there is no dedicated TSA Pre line at EWR/Terminal B for British Airways (Gates 51-58), but any TSA Pre eligible passenger will get instead a TSA Pre “Lite Experience” instead.

The TSA Agent who checks your passport & boarding pass will hand you an orange TSA Pre card that will allow you to: (i) keep your shoes, (ii) keep your belt, (iii) keep the liquids & laptop inside your bag (inconsistent though as some passengers were asked to remove their laptop and put it in a separate bin).

There are two lines (left & right) and both have the full bodyscan machine and the regular metal detector. Depending on which lane you chose and how busy the line is, you may go through the full bodyscan (with shoes & belt) or just the metal detector. Once again, not a general rule as it depends on the TSA Agents...

Not too bad (you get to keep shoes & belt), but not awesome either (no dedicated TSA Pre lane, you are mixed with the general queue).

Cheers,
-vinnyc