Non updating site!

[Christo]

Wondered if anyone could help me with some basic css/html issues..

I have updated a site with differing background and header, however only certain parts are updating? I just dont get it! Is there a way to force browsers to recache (in the code?).

This site has updated fine:
http://voices.mtv.it/

However this not..
http://voices.mtv.co.uk

Can anyone help!? (or maybe explain!)
Thanks

 

[Christo]

Wasnt the best explained but Linkex is right (Tripnologist - slightly unfriendly response!), it was an Akamai issue, (the changes werent reflected even looking at the site via mobile/cleared cache/different computers).