Hi Sarah,
I've finally worked my way through the mass of posts and all of your great 52. To be honest there's not much I can add to what has already been said but looking at your images I've got a long way to go to get to your standard!
A few of my highlights:
The chopped jigsaw is my favourite, it's a little different from the norm which is why I like it
Street is fabulous, some amazing photography and good PP
Speed - I wish I hadn't noticed it as I was planning to do this at the weekend as a catch up for me. I know I can't do better than that so I won't even try!
People 2 is great, I have friends in Cardiff and love that area, another clever shot and great reflections
Mechanical made me smile - very clever play on words. I really like attentions to detail like that.
The only thing I'm not sure of is candid, I like the picture but I'm not sure it falls into candid for me. I can't decide if animals count!
A really great set of images, keep it up, or should I say don't keep it up. You're showing us all up!