Many many thanks for feedback from you all. I think that there are some things that are straightforward to fix, others where I need guidance.
I can easily bring the toms up a bit and get the kick to stick out more, that's no issue.
I agree that the guitars are likely to clash with vocals at the moment so I will try to cut a bit around 2-4kHz to tame those high mids.
I can also drop the bass slightly so that its less dominant.
The two issues that I currently have are:
Guitar thin-ness. What do you suggest? Currently there are two guitars double-tracked, one panned fully wide, the other at 75%. I could potentially do a third track for each guitar and mix it in a bit lower but centrally (or at least not as wide) - would this help thicken it up? What do you suggest?
The other issue I have is the 'clack' from the bass. I pick up on it too much when I listen back through phone and headphones. It's a mid-range frequency from my ear alone, but I can't pinpoint where it is exactly and I'm not really sure whether some EQ is the right approach. Suggestions with that one would also be welcomed.
I will post a newer mix with these points hopefully addressed over the next few days.
Thanks for helping me learn, I can really only progress when you guys take the time to comment and make suggestions, I get so much more from it than reading alone, so it's very much appreciated!!