No wasn't Swapps under Neat as Neat only had 84/85 feed in those days (R30).
I can remember GR3/F4 and Mir V and Super E's overhead E Anglia but there was no A4 DACT to my Knowledge.
Portreath not sure if that was up and running as a CRP by then. If so then they would have worked within the Swapps. But these were the days when the WC was not allowed to routinely control over land.