All good, figured it out, but for anyone else….
I guess it was a problem with my theme, but it was because I didn’t like the standard H3 format of my theme being used by BigContact for all the titles in the form.
So…
1.) Open this file for editing… /wp-content/plugins/bigcontact/classes/form.php
2.) ‘Find’ the where these words are:
– getform_title
– getTel_title
– getHours_title
– getMap_title
3.) Change the H3 tags for each of these to a suitable one you like from your themes css
4.) Save changes and view
Quite happy with it now… great plugin guys!