Secret Squirrel, I think you'll find that all my collegues are only having a laugh about such things as breakfast, and meant no harm. When you come to LATCC, you will find that although ATC morale is crap, the general watch vibe is a good one, where we will sit and laugh with each other (at each other) when the time permits. I hope then you will see its nothing personal.
My bit for the thread is - sit at the top of descent and try to monitor the heading changes whilst flying the exact route (sorry it wont be into the London TMA). Then try it the next time, and also when its blowing a gale. You should find the variations can be as great as 10degs for only 5000ft. If the a/c overhauling you is 5000ft above/below, you either diverge or converge, either way its not toward the point you want to be at (KENET I think?). When your inbound to LGW and this happens, also look right, and you may just see a GREAT reason for not going that way, even better than an Airprox.
---Avoiding Action, missle 10 o'clock, range 15 miles, locked on, BAIL OUT, BAIL OUT---