I got this information off of an allergy support group. Great news for those looking for a soy-free as well as a dairy-free margarine!
Maybe some of you have heard but Earth Balance now offers a dairy and soy-free spread, but note that they do include pea protein and sunflower lecithin in the product.
More info at http://www.earthbalancenatural.com/#/products/soy-free/
And there’s a review at:
Other margarine’s that can be used for a dairy and soy free diet (as long as soy oil and lecithin are permitted) are Fleischmann’s UNSALTED and Smart Balance LIGHT. I’ve found Fleischmann’s has been best in baking because it has a higher fat content. That was a tip from Linda Coss’ cookbooks.