This is why we can't have nice things... OCUK try their best and give forum members free shipping and then they want more... Simply can't win.
If you're in that much of a hurry a) order quicker or b) pay the price. Free shipping is a nice gesture by OCUK considering they don't have to do it.
But as 5UB has stated it doesn't suit OcUK's business model which is a fair enough point and puts the matter to bed.
How can you make a loss on shipping? Any business builds shipping costs into their margin (at net). You mean you make less of a profit surely.
Saturday delivery is also not really a premium service, it costs more or less the same (to a business) as next day delivery. £13.50 for Saturday delivery is extortionate.