Do I need to ask permission to link to a website?

Content found online is protected by copyright in the same way as print and other formats, even if there is no copyright symbol or notice. Linking directly to the web page containing the content you wish to use is almost always permitted. You should also include the full details of the author, copyright owner and source of the materials by the link. This will avoid any suggestion that the website is your own material or that your website is somehow affiliated with the other site. 

If you have reason to believe that the website may contain content posted without the permission of the copyright owner, you should avoid linking to it.

If you want to copy content from a website, rather than link to it, you must comply with statements prohibiting copying of material on the site or indicating that permission is required to copy the content. Such statements are typically found in sections titled ‘Terms of Use’ or ‘Legal Notices,’ and are often linked from the very bottom (footer) of the page.