Nordic basing isn’t happening this winter, so you’ll be U.K. based regardless of if you’re given a dual base or not. It might be scrapped permanently if this winter goes well without using the dual base.
Command is rumoured to have come down to and including all 2014 joiners. Still awaiting bid results, however.
737 doesn’t do any Nordic work. All 73 UK bases were generally fairly easy to get into up until recently. LGW is overcrewed as it stands, but all subject to change pending the bid results.