I think the concern is that sites such as Google might take your being in Turkey (they know everything
) and direct you to google.com.tr rather than google.co.uk - I have not noticed this more than once or twice and I think they take the info from your computer settings (such as your selected language setting in control panel) rather than from the IP you are using. I might be wrong but I think that is the case normally.
If so, this means that although your IP is Turkey, your language of choice is English and your country Great Britain, so you should be directed to .co.uk over .com.tr