Bought a couple 1L tubs of this new line of Probiotic Frozen Yogourt from Chapmans.
Now, I've never been a fan of any of their products, but the packaging and nutritional values got me to take a chance on this product.
Turns out, it's actually pretty good. Good enough to recommend to others.
I bought a tub of the Madagascar Vanilla and Dark Chocolate and they actually have 5 and 6g of FIBRE respectively. They're fairly low in calorie and fat count as well.
Worth a try if it meets your price point.