Thank you everybody for trying to educate me.
I prefer mayonnaise, and Hellmann's in particular here in the UK. There are some lower calorie versions of it around, but I prefer the real thing. We also have lots of various ready made dressings on the shops, and some people love Salad Cream, this also comes in a bottle, has egg in it, but it is not sweet, more salty vinegary, and is yellowish in colour, so I do not think it is comparable to Miracle whip.
I will stick to Hellmann's!