Mil jet in the Weston/Brize Norton pattern?

[SVX]

I'm working out of the home office today; and there has been something very loud in the circuit holding above Weston/Brize. I've not been able to get a visual fix, but it's definitely a large multi-engine jet. Nothing on FR24 or the usual sites - it's certainly not a C-17, just wondered if there was something interesting passing by.

Anyone on here have any info/insights?

[SVX]

Whatever it was, it was making an absolute racket (in a good way); I was hoping for a chartered Antonov doing a heavy cargo run ...

[SVX]

As I mentioned in the OP; I couldn't see it, we also have a very low cloud base here today. Definitely sounded more like a turbojet than a high-bypass though. Since the VC-10's and Tristars have stopped operating, I normally only see/hear the Hercules and Skyvan in this part of the world (with the exception of regular PAX traffic in the cruise).