Google Maps API - UK PostCode

Hy guys,

I want to make use of a Google map on my website. I am new to this but have my map working but it is currently displaying some random place in the USA. I want to provide a postal code for the place of my company in the UK so that when the visitor goes to the page with the map on they can see the location closely with a marker. Much like... http://www.google.com/apis/maps/

I am not sure whether you can do this with UK post codes because of the Post Office having the license?
I was hoping that someone could clear this issue up for me and tell me how to get the best out of Google Maps API,

Thanks GuysStart Free Trial