Ok I'm not going to flog a dead horse regarding the aircraft, you've obviously got your opinion on that one
Not going to comment on all, but these are a few that, in my opinion, could be improved slightly.
http://www.rhysphotograph.me/wp-content/uploads/2014/08/Caswell_House_Wedding-005.jpg
Think that would have lent itself perfectly to the horizontal rule of thirds, sky barn, grass. More balanced, no distracting shadows on the grass.
http://www.rhysphotograph.me/wp-content/uploads/2014/08/Caswell_House_Wedding-008.jpg
Would have taken a few steps forward, but still used the sides of the white doors as a frame either side. Reflections in the glass are distracting.
http://www.rhysphotograph.me/wp-content/uploads/2014/08/Caswell_House_Wedding-009.jpg
A tighter frame whilst composing or crop out the lady on the left. She's distracting from the main subject - the bride to be.
http://www.rhysphotograph.me/wp-content/uploads/2014/08/Caswell_House_Wedding-016.jpg
I like it, but I would crop out the dark section on the far right since it drags the eye to the right.
http://www.rhysphotograph.me/wp-content/uploads/2014/08/Caswell_House_Wedding-018.jpg
Would have been nice to move the camera a few degrees left to get the bridesmaid on the left totally in shot. That would probably have had the effect of removing the mirror with the out of focus clock and the pink towel draped over something in the reflection. Also seems to be leaning to the left - needs straightening slightly and crop the mirror out.
http://www.rhysphotograph.me/wp-content/uploads/2014/08/Caswell_House_Wedding-024.jpg
Reflections ruin it. Would have dropped the camera down a little to remove the light and capture more of the dress train.
http://www.rhysphotograph.me/wp-content/uploads/2014/08/Caswell_House_Wedding-028.jpg
Reflections or something in the window obscuring things? Distracting.
http://www.rhysphotograph.me/wp-content/uploads/2014/08/Caswell_House_Wedding-039.jpg
Don't like the bush.
http://www.rhysphotograph.me/wp-content/uploads/2014/08/Caswell_House_Wedding-041.jpg
Think cropping out the table, chairs and umbrella would improve what I think is a nice moment between the Bride and her Dad.
http://www.rhysphotograph.me/wp-content/uploads/2014/08/Caswell_House_Wedding-042.jpg
That blooming bush again - distracting.
http://www.rhysphotograph.me/wp-content/uploads/2014/08/Caswell_House_Wedding-047.jpg
Too much plant and ornate garden chair - makes you look at that first rather than the feet.
http://www.rhysphotograph.me/wp-content/uploads/2014/08/Caswell_House_Wedding-048.jpg
Another great spontaneous moment, but the bush ruins the shot.
http://www.rhysphotograph.me/wp-content/uploads/2014/08/Caswell_House_Wedding-053.jpg
Consider cropping out the second sign on the far right?
http://www.rhysphotograph.me/wp-content/uploads/2014/08/Caswell_House_Wedding-064.jpg
This is a lovely image, its got a nice natural vignette made by the people standing out of shot, the man on the left however is a little too recognisable as a man standing on the left. Perhaps make the vignette a bit more pronounced to get rid of him.
http://www.rhysphotograph.me/wp-content/uploads/2014/08/Caswell_House_Wedding-071.jpg
Crop out the people to the left.
http://www.rhysphotograph.me/wp-content/uploads/2014/08/Caswell_House_Wedding-086.jpg
Crop out the half a body, arm and glass on the left.
http://www.rhysphotograph.me/wp-content/uploads/2014/08/Caswell_House_Wedding-103.jpg
Distracting foliage - bin.
http://www.rhysphotograph.me/wp-content/uploads/2014/08/Caswell_House_Wedding-119.jpg
Crop in tighter and lose about three quarters of that shot. Top right quarter is the image, but the rest is distracting.
http://www.rhysphotograph.me/wp-content/uploads/2014/08/Caswell_House_Wedding-145.jpg
Pretty lady and a nice image - crop to lose the out of focus person to the left and crop to remove the spiky bits sticking out of the right hand side
http://www.rhysphotograph.me/wp-content/uploads/2014/08/Caswell_House_Wedding-147.jpg
Blurry bit is too much. Shame since the groom and best man are in the same shot.
http://www.rhysphotograph.me/wp-content/uploads/2014/08/Caswell_House_Wedding-150.jpg
Camera needed moving down to capture more of the people.
Not going to comment on any more
I think you were restricted a little by what appears to be a narrow barn. I also think that there are too many out of focus coloured blobs in your shots. They work well at the edges framing things, but they're distracting when they take up most of the picture or obscure what should be the main subject of the shot.
Overall, I think you've done a good job at creating a consistently well exposed and coloured balanced set of shots. You've clearly got a good eye. I hope you don't think I've been too critical. As someone said above, it's probably good that you've made people think but hopefully some of the feedback will help as well.
