SAINSBURYS -

In my Sainsburys in the allergys section they have packets of roasted pumpkin seeds, expensive at £1.29 for a little packet but they are much nicer than non roasted seeds for a quick snack.

Sainsburys Tzatziki - carb 3.7 per 100g, not too high in carb and makes a lovely dressing for salad etc.

Creme Fraiche - reasonable price and I think nicer and thicker than the normal soured cream.

They also have macadamia nuts.

ASDA -

They have big packets of nuts at very reasonable prices - the latest mix I got though salted had hazelnuts, cashews, pecans, macadamia nuts, almonds - this is in a purple foil pack.