(bold mine) Ahhh, but then a precedent would be set and the next thing we shall also be expected to submissively go along on "favour," "honour," "rigour," "valour," "humour" and before you know it it will be a bloody "moural" majority, a bloomin' "fourest," a crimey "coural" reef... and blimey "Boura Boura..." lol. JMO

arrot:
I have a theory about this.
In early times the English were quite casual about the entire concept of spelling. This is clearly evidenced by the example of the 666 variations of the name "Shakspar" ("Scheckspere"?). After all, if they couldn't be bothered with an agreed on spelling of the name of the foremost deity in their literary pantheon then why worry about mere words.
After the Irish invented the printing press literacy and the penny dreadful were very slowly introduced into what has come to be known as "British Culture".
Somewhere in the process attentive printers on the island noticed that they were plagued with a surfeit of the letter "u" in their type drawers. Concerned about unsightly dents in their ink pads from uneven type wear they cleverly decided to hide the extra "u"s where they would not be noticed.
There really wasn't much danger of their being caught. The Scots hadn't invented the dictionary yet, so the Tories would never be able to tell the difference, and the Whigs wouldn't care since the "u" was silent and involved no extra work.
The colonists on the other hand were suffering an acute lead shortage at the time, as so much of it was being used to send small (approx. 3/4 oz.) love notes to uninvited strangers in red. As a result all their surplus "u"s were melted down and used to make "French" letters, also known as "Minie balls".
And so we come to modern times.
In case you thought this might be off topic, I wanted to share with you so that we could be grateful that we are not discussing "chlouroufourm".