I don't know if anyone else has had the same problem this year, but none of my tomato's have germinated, with the exception of "Cascade" and the whole packet germinated. I am using seed compost but mix in some horticultural grit for drainage. I don't know if I have used too much grit, but I haven't had one tomato plant. The seeds were Thompson & Morgan and in date! I had no problems last year. My cucumbers, corgettes, sweetcorn, runner and broad beans have all been fine!