Any Drupal Experts Out There? [Never Mind – Fixed]

Look up at the top of this page, see that \ up there?

I’ve suddenly started seeing a \ appear as the very first character on every page. This happened when I upgraded to 5.14
I think I’ve run out of ideas, and I hope it’s just something obvious I’m missing.

I’ve tried the following
– Changed themes
– Turned off modules
– Reinstalled from scratch, though kept the DB intact
– Cleared Cache
– Grep, grep, grep and more grep

I’m hoping I don’t need to down grade from 5.14 to something earlier.

[UPDATE] I did finally fix it, the random \ was in settings.php, not sure how it got there!