Thanks guys, as a result of the chit-chat I've sorted my problem out, at least.
It seems that MediaHint was Enabled on my Firefox ( unknown to me !) which allowed me BBC content but not local NZ stuff - that was disallowed, but by Disabling MediaHint I've recovered local stuff and lost BBC stuff.
So I can just Enable/Disable for the service I want.
Simple when you know how ! The power of PPRuNe.