Wow! Thank you so much for all the responses! I didn't expect any replies so thank you for taking the time to respond to me 
Zebra I don't chop it up but it is very small and soft so wouldn't be difficult to eat I'd have thought. Maybe I'll try and cut it all so its smooshed together then he won't be able to lick the gravy off. He's about 2 and a half so still young. It may be something to do with his teeth.. although I have checked them and they seem fine. We have had an unending battle against the fleas so I don't know if that has something to do with it.
Gleam yes he's a veracious water drinker. Everywhere but a bloody water bowl in fact. Only from glasses (I don't drink from it after!) or the bath tap or some little dishes that we got for him and only tap fresh water (i know.. he's spoilt). The again I've seen him drink from a muddy puddle before so he obviously doesn't mind when he's outside! 
Wolfie I think he prefers the wet as when we fill his dry food bowl he's usually non plussed but with the wet food he's at our feet mewing and purring and can't wait to get stuck in.. but just for the gravy.
Dame Yes I was interested in raw food, which brand do you use? May have to look into applepaws too.
TheWay Thanks for the brand suggestions, hadn't heard of that website so I'll have a look in to some of the other options.
Gleam His wet food is pretty..wet! and the meat bits or v soft, might see if theres something wetter out there that he might like or fork it all together so it's more of a paste.
Tizzy Monkey LOVES tuna and we gave it to him for a while until I read that it's not that good for cats too often. Maybe we should give him a bit here and then though. He also loves kale and spirulina.. he obvs knows whats good for him!
TabbyLady yeah maybe I' just going to have to shop around a bit until we find something that he consistently likes. He usually likes it loads for the first fews days and we think 'great job done!' and then he goes off it and just licks the damn thing!
Fluffy you may be on to a winning formula there ha!