thanks for all your replies.
He's such a good boy and it really winds me up !
I could understand if he did this towards the end of his meal or even halfway thru - but he does it in the first/second spoonful !
I'll present him with the food with a spoon and fork (like they do in his nursery) then sometimes feed him a spoon of the food and leave the rest to him (like they do to him in nursery) - but when he does it himself he'll fill the spoon and then throw it on the floor (like he's protesting !). Now I don't know whether its a sign from him that he doesn;t like it or that fact that he's not hungry enough ! (he usually does this when I feed him at 5 - 6pm after picking him from nursery) - therefore I've come to the conclusion that he's just realised how to control his eating as he's not hungry - he doesn't eat - whereas before he just ate it all because it was there ! (I miss those days !)
I've noticed he's not so bad for breakfast - he'll eat toast and on occasions he'll throw it on the floor and sometimes he'll eat it all. Then I usually give him something else like sausages/scrambled eggs/cereal.
On days at home I usually give him a mid morning snack of either a banana or raisens and then an 1 or so later his lunch. So tomorrow (saturday) I'll skip the snack so he's hungry for his lunch !! hopefully he wpn't throw it on the floor ! EEERRRRRRR as I said before - he never throws it on the floor in nursery ! WHY AT HOME !!!?
I try and think - oh its a phase it'll pass - like the other phases he's had in the past where you think he'll starve himself etc !
Any more tips very welcome to his stressed out mum (and soon to be mum again to another little naughty boy !)