I would agree with the others, learn to start checking the back of packets for total carbs, rather than just the sugar levels. I did find one ready meal that was showing 'green' for sugar, I think it contained less than 1g of sugar, but when i checked the back it was over 70g of total carbs. While ready meals aren't ideal they are useful as a quick answer after a hard day at work, I have found some that are as low as 35g, so well within my limits although still too high for others. You need to find out how much you can tolerate.