The British are coming ....
Can't believe these haven't been mentioned yet; Steve's Hawker Seahawks are lovely renditions of a classic British jet, without doubt they qualify as 'Gems'. You can find them here, along with plenty of repaints:
http://www.flyingstations.com/sea-hawk.html
And I know it is new, but that doesn't mean it is not a gem; the Percival Provost was a type long overdue for a decent model, but Keith Paine has gone well past 'decent', his Provost is gorgeous. You can find it at Britsim.com, just do a search for 'Provost' & make sure you do a search for 'Leonides' as well; any of the soundsets by Gary Jones qualify as gems too, I think.
And while you are at Britsim, Dave Molyneux's ever expanding Auster family are worth investigating; I know they've been mentioned earlier in the thread, but I'm sure Dave must have released at least half a dozen new models since then. Hopefully the move to the new server will sort the download issues at Britsim, but they were always worth the effort.
And I know these models have been mentioned before, but I'm rediscovering them & learning to appreciate them anew; Dave Garwood's Hawker Hunters are superb, imo much better than the payware alternative, and Dave modelled more variants anyway. I'm only surprised that there weren't more repaints done of these models, but I may start to rectify that myself.
Available at all good outlets, but easiest to find at Britsim I think.