O Day

I like it. It's very English, very BBC-like.

The kern (space) between a and y can be tweaked (try approaching them)

Let y where it is and put a little bit closer to it the rest: "da".

It is hard to assume that the circle most be understood as an O. As a client that doesn't know the name of the brand (O day) i would read it as Day.

Hope this help.

It is good to present a clear logo over a white surface, without gradients or other effects behind or in front of it to see it as it is.

Please just show us your work just as it is, remove the gray gradient behind, this would let us see it in a better way to appreciate it.

Nice!

Nice and simple, there is an issue with the color though. If you were to convert this into a solid color or black & white, it would turn into a generic "O". Maybe distribute colors in a different fashion that would allow you a nice silhouette when you turn it to solid color.

I don't like this logo, there is no symmetry in it, no ballance. That big empty space is disturbing.