Thanks everyone.

It's not only the eating that has made me think about him having sensory issues, I know there is a lot more to it than the foods he eats. He always had 'quirks'. Things he's done that DD has never done. Things he hasn't done that DD and other children do.
The freak outs when he touches slimy things. His toe walking. His massive fear of being lifted high, or being tipped upside down etc. There are quite a few items on the checklists I've found and whilst I think if he did happen to have something like this, I believe it would be very mild.

He is a very intelligent little man, as suggested several times by his kinder teacher. He has the most amazing memory. He's a very loving little boy and cares about everyone around him (also mentioned by his teacher). This is what makes me question a lot of things aswell.

Whilst a label may help us to understand his issues, it's really not the be all and end all for us. Even if it's not specifically this disorder and just that he has some sensory issues, that will certainly help us understand his 'fussiness' for lack of a better word. My main concern is his eating as it's affecting his growth.

I DO understand that he quite possibly doesn't have this. I'm not silly and I'm certainly not a doctor. I DO know that he has some sensory issues. I want the best for my son. I believe in educating myself to know about ALL of the options and I like to have some knowledge before I go into it with the professionals. I'm certainly not saying he HAS SPD and leaving it at that.

All this thread was for, was for a little bit of info that I may not have known, or perhaps some more in-depth information about SPD that I could look at that might actually make me think 'hang on... that might not be it'.

Thanks for your replies. I do appreciate them.