How to centre two images

Hello,

I was wondering if anyone can help me with a very basic, but frustrating problem. I have two images (actually they are 125×125 ads) that I want to sit side-by-side and centered. However, if I use the normal centering option in WordPress, it certainly centres them, but one is above the other. They can’t centre them side-by-side on the same horizontal plane.

At the moment, I have them set to the left. You can see what I mean by looking at the following page. Scroll down until just at the end of the post (before the comments) you can see 2x 125×125 ads aligned to the left instead of centre.
http://www.eyeondemand.com/2016/02/18/now-tv-box-2nd-gen-review/