Okay everyone, thanks. I think I have been worrying that they would flop over and die if they didn't have any heat. I have only sown those things which say on the packet can be sown in January. What's thrown me is that quite a few of the flower seeds instructions say something like "place at 18-20C until germination and then transplant and grow on in cooler conditions". What on earth does cooler conditions mean? If it means something over about 5C then that's okay as my little electric heater can be primed to turn itself on if the temperature drops below that. Also, I bought one of those cheap plastic covered set of shelves which would not doubt keep them a little warmer.
Usually, I buy plug plants and the seeds I have sown have been a bit hit and miss so it will be interesting to see how they come on.

Alice, there are too many to mention but a selection is as follows:-
Penstemon Barbatus Iron Maiden
Antirrhinum braun-blanquetti
Delphinium Hybrida Green Twist
French Marigold Boy-O-Boy
Carnation Cottage Delight

I have also planted Tomato Big Boy, Sweet peppers and aubergine Moneymaker as I think these need a long growning season. But I think these need to be kept warmer when they have germinated so I might find a place for them indoors.

Jools