I've sown my first lot of tomato seeds, which were black cherry toms, next will be the gardeners delight. I've also sown my chillies, peppers, and cucumbers all indoors in the humid fish tank room :)
They will be going in the green house once they've germinated, to be replaced by the next lot of tomato seeds.
In the unheated greenhouse itself i've sown my hardy annuals like nigella, corncockle, cornflower etc. I'll be sowing my carrots, lettuce, spinich, peas etc in modules this weekend. I've already got ft high broad beans in there which will be being planted out soon.
Although more work than planting direct in the soil, it seems you get much more consistent results from underglass sowings of many crops. When monty was bemoaning his carrots on GW i was busy harvesting lovely carrots in the cold wet north! And this will be only my second season of growing veg.