I've not touched "spreads" since working in the process room at Dairycrest years ago. Butter was made with cream and salt, and nothing else. Spreads (Clover and <retch> Willow) were made with two types of oil - one of which, if spilt, was difficult to melt even with a hot hose; Christ knows what it does to your arteries - an unappealing substance called watery skim, used instead of buttermilk, two types of emulsifier (one of which looked like granules of wax) and colouring which came in bottles marked with a black cross in an orange square and a warning about birth defects in pregnant women. Oh, and some actual cream.
Oh, and the other thing I learned was never to buy expensive butter. We used to pack Sainsbury's best butter (cheap), Sainsbury's English butter (more expensive), Country Life and M&S "not just butter ... it's ridiculously expensive butter" from the same vat of cream, fed to the same churn and packed on different lines.