Okay, I understand what's happening now. Thank you to everyone who replied.
If you look at my diaries I have a few grows going, some from seeds some from bought clones.
The seed I bought from Queens House was a 50/50 Sativa and needs more darkness, that is now clear
The 2 other flowering plants were bought clones that I now suspect were originally grown under lights, now that they are outdoors, again there is not enough darkness.
I have another group of bought Lemon Kush clones - It remains to be seen what will happen but I suspect they started out under lights.
My last group of plants were all grown from seeds, by me, outdoors from seeds that came from plants grown outdoors locally - It should not be a surprise that these plants look the best, it remains to be seen what the quality will be however!
I now have more info to put into seed/genetic choices for the next grow.