[Bluecortina]

I believe it was, if not it was the intention. There was a video on YouTube several years ago, since removed about the grand opening of LNN in December 1992, and a lot of it being about the transmission side of things. Greg Dyke mentions in the video something about nominated contractor or that it was their intention to be.

Apologies for the lack of accuracy but it’s been a while since that video was available.

eggsontoast has answered this question. Pre 1993 Thames and LWT were the nominated contractors and after this date Carlton replaced Thames in that role. As pointed out LNN provided the technical facilities for the transmission facilities, the actual Transmission Controllers (those who made the decisions relating to the minute by minute running of the ITV network) and who worked within the LNN area, were still individually employed by Carlton and LWT because of their role. This was to change as the years went by as Carlton/Granada/LWT etc all merging and the Transmission Controllers became employees of LNN - but the whole structure of the network had changed by then.