OK, as an ex-Southend ATCer, albeit many years ago, I'll take the bait.
Southend only has primary radar and very limited vertical airspace, in which to contain it's IFR traffic and training traffic. This means that providing a LARS in a busy environment with a constant stream of City and Heathrow inbounds passing overhead or abeam can be very challenging. (Chevvron...I'm surprised EGLF are hanging onto traffic that far out without co-ordination?)
Flying through the final approach track of a published instrument approach at an Airport known to operate large jets is, of course, perfectly legal. Personally, I don't think it's the best demonstration of airmanship, maybe the ATS Manager was hoping to point this out?
There are many new faces (and voices) at Southend since I was there, but I do still know a good number of the team. They're a good bunch of people and extremely competent ATCO's, who do a difficult job with limited resources. That's why the CAA 'approve' them as an ANSP.
I flew in there about 3 weeks ago, got a Traffic Service in and out and a radar handover to Farnborough on the way out, despite a runway change and a busy VFR and IFR traffic mix. Top service.
Why not give them a call or another visit, rather than resorting to voiceing your gripes and making accusations on a public forum? Take cakes, you'll need to. It seems, from your comments that there's an 'us vs them' mentality between your farm strip and Southend ATC. This does nothing to improve flight safety for any airspace users and needs addressing.