[DTV]

Genuine question though, what extra money and resources would theroretically be needed?

Well I guess that depends on how sophisticated you want the service. The simplest rolling news option - Euronews-style - isn't going to cost much more than the existing ITV News operation, presuming you're just using reports that would've been created anyway. A simple bulletin set-up, i.e. having a presenter linking into those reports, is also going to be relatively cheap - you'll only have the extra presenter and staffing costs (though this could itself run into a few £m).

But if you want anything more dynamic than that - extra reports, live reports, contributors, business and/or sport segments, breaking news capabilities, etc. - that's when additional costs are going to start coming in because you'll need more staff and resources. I'm not sure where ITV News is budget wise these days, but the whole Sky News operation costs about £90m annually and the BBC News channel alone costs around £60m (and that's partly piggy-backing off the wider BBC News operation which totals a few £100m).