Thanks for all the suggestions…. I’m afraid it was a fairly basic issue!!
For some reason under settings the website link was set at dev.perthtriclub.com.au ?? (I think this was the test site that was set up when developing the site?) – so any changes were being uploaded to the dev. site and not the www. site (I presume..)
I swear I had done some updates to the site about a month back with no issue, so I am wondering if the settings reset themselves….
Anyway, this may help a novice IT person in the future ??