Yeovilton was rejected as a Dave base because it would be too noisy. Apparently.
Basing for JHC is 'under consideration'.
If there is to be a second JCA base - and there may not - Cottesmore may get that, with the remaining GR4s from Lossie relocating to Marham. There is a suggestion that Cottesmore might get Typhoons from somewhere, but heavens knows when, or from where they'd originate (the 'missing' Leeming squadrons with a later ISD?)
Again, there are several alternative scenarios, all plausible and none confirmed...