Pistachio Jello Salad & Jellied Cranberry?

Does anyone know, what I could use in place of Cool-Whip for this Pistachio jello salad? My friend just brought me some pistachio jello pudding from the states, and I want to make the salad for Thanksgiving, also do they sell the jellied cranberry here? Thanks for any help
Celia

I saw some Jellied Cranberry here in NI, l assume it would be in the UK mainland also. l think ocean spray makes it. It's not in a can but in a jar.

Also about your cool whip, they do sell dream whip here in a package l have used it for my recipes that call for it, it's not bad!

I use the powdered Bird's Dream Topping as my Cool-Whip substitute. Not exactly the same -- but works for me!