one lobed type leaf bottom right looks like poached egg plant [limnanthes]or nemophilia
tall one with red veins possibly Clarkia/Godeti
middle edge right looks like the tip is '2 fingers' Nigella, love in a mist
tall slim one just off centre back Cornflower

only guesses but similar to what I have grown over the years.
does the seed packet not say what is in the mix?

Looks like the shake and rake bee friendly seeds a neighbour has growing in their garden but I wouldn't like to try and identify them all!

Cor thats a hard one! The tall one in the middle could be clarkia (spelling), the serrated leaf on the right front could be French marigold, there are a couple of poppy looking seedlings middle left and what could be a forget me not to the right of the clarkia but who knows for sure?

Thanks everyone,for your help..All the ones you have mentioned,will be welcome..All is says on the packet,is Summer long flowering mix..Sow where you want them to grow..and this is where he wanted them ! :o)
I will prick some of the similar type ones into another pot,and take it from there..at least it's got him interested,as he wants to check on them every time he comes..Unless I have sown seeds myself,I'm not that good at identification..Hopefully,I will be able to show you the results before long..thanks again..