OK, I can't believe it took me nearly a month to get around to listening to this. Sorry for the delay, Liam!
All in all, this sounds really nice, and much better than anything I came up with when I first started writing orchestral music. Well done!
After a couple of listens, I have some suggestions on what you could improve. Some of the things I'm about to list aren't necessarily wrong, they're just something I would do if I were working on this track.
1. The strings at the beginning sound nice and flowing, but like someone said, they're a little muffled, so try playing around with the EQ settings or maybe even adding some higher tones to the progression.
2. At 0:20, the strings disappear completely. I'd at least put some really quiet string chords in the background in that section, and maybe a high (but quiet) tremolo note with the violin section. You can use the strings to gradually build up to 0:50.
3. The trumpet is probably the worst sample in the Eastwest library, so you need to be really careful when you use it. I almost never use it as a solo instrument, only in tandem with strings or horns, and even then I try to mix it down, because to be honest, it just doesn't sound that good. =D At 0:47, I'd replace the trumpet either with strings or something else.
4. Adjust the volume of the glockenspiel at 2:14. It's too quiet compared to the brass. You could also adjust the volume automation of the brass instruments to get a more varied dynamics (swells etc.) instead of monotonous chords.
That's it for now. =D I hope you finish this. I'd very much like to hear the final version!