At the beginning of the season I sowed several veg seeds in both Levingtons peat free compost and also Aldi's Enriched peat free compost. Germination was less than 50% mainly, I think, due to the high acidity levels from all the bits of unmulched woody twigs and fibrous roots. I then bought Clover peat free compost and re sowed the same seeds and have pretty much 100% germination. It's not the cheapest compost but the difference in quality is immediately obvious when you open the bag; no sticks, twigs, bits of unrotted roots or fibre, just clean, fine tilth compost. I've dumped the other stuff on the potato patch.