The original post mentioned "running a UK business from abroad" and titled the thread "...owning a UK company as a non-resident of the UK".
So we're talking about a non-resident employee of a UK company who doesn't do their work in the UK, so they might not be subject to UK income tax. (they could be taxed in some other country where they live and/or work)
If they are diverting profits by excessive pay, HMRC can make the salary non-deductible for UK corporation tax.
Oh I see your point now. That makes sense.
In my case though, like you mentioned, it would look reasonable and be most certainly deductible from corporate tax.