Codebreaker found in bag attended US security conference before death (2012)

He might have been a pre-Snowden that didn't escape:

Williams was unhappy with his work environment at MI6 and felt he didn't fit in with his colleagues. During the inquest, testimony revealed that the coder had conducted unauthorised searches of an MI6 database

also: http://www.wired.com/threatlevel/2010/08/codebreaker-death/

Killing someone and locking them up in a duffel bag in a hotel bathroom doesn't seem British governments style. Before claiming the victim was another Snowden/whistleblower, you might want to read this excerpt from the article:

"The source indicated that Williams' work to disrupt the Russian mafia could have put him at risk".

"Some of these powerful criminal networks have links with, and employ, former KGB agents who can track down people like Williams," the source said.

I disagree. Making the victim look like some kind of pervert or loner would appear to be common occurrence for British citizens.

Of course, all Brits might all be perverted loners!

  Nicholas Anderson, former MI6 officer turned author, told
  The Independent on Sunday: "I am on verbal record to my 
  own family, close friends and select lawyers that if 
  anything ever happened to me – a straight man and a 
  positive thinker – it would likely be made to look either 
  like a suicide or that I died dressed like a woman.

  "Over the years, it seems to me a favourite way of 
  presentation. I, of course, am not suicidal in any remote 
  way nor do I like to dress so. When I read in the press 
  about Gareth Williams, women's clothes, and a wig, it all 
  fits the usual scenario."

N.B. The source of the above quote is not currently available: http://www.independent.co.uk/news/uk/crime/curious-case-of-a...

Other suspicious UK deaths:

- http://www.mirror.co.uk/news/uk-news/mi6-dirty-secrets-why-d...:

- In 1983, 25-year-old Stephen Drinkwater, who worked as a clerk at GCHQ, was found dead at his home with a plastic bag over his head.

- In 1997 another worker, Nicholas Husband, 46, was found dead at home dressed in a bra and panties – with a plastic bag over his head.

- Two years later, Kevin Allen, 31, a language expert at GCHQ, was found dead in his bed at home with a plastic bag over his head and a dust mask over his mouth.

And a few more British perverts and loners:

- http://en.wikipedia.org/wiki/Stephen_Milligan

- http://en.wikipedia.org/wiki/Death_of_Gareth_Williams

- http://en.wikipedia.org/wiki/James_Mossman

- http://en.wikipedia.org/wiki/Jonathan_Moyle

- http://en.wikipedia.org/wiki/James_Rusbridger

Plus a couple of other deaths that were linked to the state:

- http://en.wikipedia.org/wiki/Hilda_Murrell

- http://en.wikipedia.org/wiki/David_Kelly

- Dr. Richard Holmes (Dr. David Kelly's co-worker) - http://www.dailymail.co.uk/news/article-2133201/Dr-Richard-H...

- http://en.wikipedia.org/wiki/Willie_MacRae

- http://en.wikipedia.org/wiki/Barry_Mannakee

- http://en.wikipedia.org/wiki/Lindi_St_Clair

Apologies about the "source" but: http://www.dailymail.co.uk/news/article-2139799/Sex-spies-se...

In summary, many of these deaths were suspicious. None of them have been proved to be attributed to the British security services, but is interesting that the link (however tenuous) is there.

Look at it another way. If you are the security services and you need to get rid of someone, making a murder look like a suicide is a good move. However, a suicide normally requires depression or some linked emotional trauma. Without that, the suicide is suspicious. If the suicide is linked to an accidental sexual game then the victim looks like a pervert, is shamed publicly and the "suicide" is much difficult to question. QED, murders through sexual misadventures are much easier to pass off than depressive suicides or straight up murders.