This is how I left things yestreen:
Mr Kipling was too rigorous a patriot. He would never sanction anything so disadvantageous to us, so beneficial to our enemy.
Which there's nothing wrong with that, except it's a bit ... assertive for me. Certain of its ground. Almost without thinking, I salted it with question:
Mr Kipling was too rigorous a patriot. He would never sanction anything so probably disadvantageous to us, so apparently beneficial to our enemy.
Now that's a Brenchley sentence. Sometimes I think I overdo the hesitations - if I subjected any novel of mine to one of those thingiegrams that count the usage of individual words and display them proportionally, I suspect that "perhaps" would come out a shade too prominent - but if a character gets to trust his own judgement of the world, then where's your story?