I think Steve Marples is still around but lost his medical a few years ago, I'm pretty sure Stuart Anderson tried to take over his approvals at Newcastle, but the CAA weren't having any of it.
The nearest one (if that's top of your list) is St George Flight Training who are at Newcastle now, but probably Durham for FI training. Then there's Andy Todd from Multiflight at Leeds and you don't hear much bad about Kevin Rowell who's at Sherburn.