Ann: Citadel Group FY18 Financial Results, page-8

There is definitely scope for global roll outs. But according to their outlook it doesn't sound like they need to focus too much on international exposure as domestic demand is high, to quote

(domestically) "...Record number of contract wins and growing SaaS client / user base, strongest ever pipeline of opportunities leveraging new SaaS products"

I am certain the vResponder tech is something that is probably destined for overseas application once domestically operational.