A previous report said that the future of the RAF presence at the airport was subject to a further iteration of the "Strategic Defence Review" to be published in July or August '03. I don't seem to be able to find this, although a previous version, published about a year ago, had St Mawgan earmarked for "quick reaction alert aircraft".
What has changed since then? Is the JMCC still active?
Serco Group are currently running the civil side of the airport, until 2007.