Thanks for the feedback guys.
XP2 is a little too grainy and lacks in contrast. Too many shades of grey, not enough white or black. Also I'm getting into true black and white film lately (stuff I can dev at home).
#1
Colour wouldn't have worked imho. The clouds were dramatic but colours were too muted that day. I think the image would have far less impact if it had been taken in colour. I think I need to go back to the negative and underexpose the trees a little though to bring out the detail (they are a little too dark atm).
#2
No idea what the wheel rim was for, it was too heavy to move, I just was wandering about looking for something to help give the picture a little focus or interest and it was lying there. I have a series of additional images taken using Tmax 100 from that spot and from the cliffs above I will hopefully have the roll finished and devved in the next few weeks (have a backlog at present). The XP2 just skipped the queue being C41. I think the later shots had slightly better composition and a much more dramatic sky - the front rolling in couldn't have been clearer. It was a distinct rolling mass of cloud and sweeping rain that just rolled over the headland as I was setting up. Also I will tweak the horizon just a smidgeon - as you say it is just imperceptibly off, thanks for pointing it out.
Both above images were taken using a tripod, an orange filter, 2 stop Graduated ND for the sky and a 3 stop ND to try and give a little more movement in the water/reeds (was shooting 400 ISO). This is one of the first weekends I've shot using a tripod for each shot and using a handheld light meter to accurately measure the different zones. Really enjoyed the extra time to think, to compose, to contemplate the choice of filters and not be rushing or guessing.
#3
This was taken 2 weekends ago on a sunny way wandering around the end of the Harbour-side in Bristol. I just liked the abstract qualities it had and am pleased it came out as I visualised. The 19mm gives a nice distortion to exaggerate it (this is a dual carriageway btw) and the red filter helped up the contrast that day - it was very bright.
Also just because... a friend took a video on his DSLR of me setting up on the clifftop swapping lenses above the beach a little after shot 2 was taken. So enjoy the GIF he made using 'moviegram'.
Just to put the scene in context.
they just seems to have more depth 
