optical illusion. it is centered, but the other elements encroach on it. In other words your nav is really long, and your telephone info is relatively short, so visually it looks unbalanced, despite the fact that the logo actually does sit centered. (good code, bad web-art direction).
Yes: the optical illusion is even more because of the black “com” part in the logo, which attracts the attention and shifts the balance left/right.
I should say: without the extended mail address and phone number and with the mail and phone icons (as in a 1024x768px screen or smaller) it is a more attractive design.
The envelop and phone icons then can get a tooltip / title with the full text at a hover.
With a .logo{margin: 2.7em auto;} the logo stays under the Menu-tab in small devices.
Thanks everyone, going to apply the fixes at the weekend, as always I’m eternally gratefully for your technical fixes And yes I’ll amend the hooarse refernces