But why would they care about there being a shadow on their organisation? They are immune to prosecution, will be funded no matter what, and if some politician, judge, or media organisation gets in their way they can simply neutralise them.
Are they really, that sounds improbable but I will believe you for the purposes of this discussion.
> will be funded no matter what, and if some politician, judge, or media organisation gets in their way they can simply neutralise them.
They are MI5, they are pretty much glorified police. Their funding is not guaranteed, their existence is not guaranteed, they could be replaced as an organization as whole, or piecemeal.
See what's happening to the FBI, this could happen to them. All it would take would be sufficient political momentum or a teflon politician.