No it's not required for you not to be a murderer, the list of exemptions are all based around fraud and dishonesty.
It's a moot point though as firstly its a allegation levelled at the Saudi state not a conviction and more importantly the PIF are a different legal entity to the Saudi State so it wouldn't matter anyway.
The only way the khashoggi incident would effect the take over is if the UK government decides to raise sanctions against the KSA because of it and make one of those sanctions a prevention from Saudi based companies to invest in UK ones.
Aye it's a bit strange that he doesn't ring me and say "what time are we going on the RTG forum today Andy"
Must be true then Sima, Metroman and myself must be the same person, no other possible explanation.