Thanks @aces and @hugo I have just figured it out.
Found it in the theme-functions.php file, played around with a couple of variations and it worked. Kind of fumbled may way through but everything seems to be working now. Although the error console is still showing a couple of issues which I’ll tackle in due course.
I’m trying to clean up old scripts but I can’t find the ‘jquery 1.6.1 from google’ call anywhere. Could it be loaded by a plugin? Forgive me, I’m clearly a novice particularly when dealing with scripts.
@Hugo, The homepage layout breaks as soon as I activate BP. The rest of the site including BP pages are fine. p.s. I just call it responsive because it adapts and rearranges depending on the size of the display (even though I’ve limited this to about 1170px).