Thank you for all the replies. I should point out that my grow box is a bit of a mix. The seedlings in red are Camelot's so hopefully my semps aren't too leggy?
I'm still experimenting and learning but next year I plan on making a rockery in the corner of the garden full of Semps/sedum and any other small hardy plants I come across. I don't know what it is but there is just something I find attractive with succulents. I remember when I was a kid I always kept Cactus and I guess it's grown from there.