If you are using Google Analytics in conjunction with your hosting account, you will not receive accurate statistics in the website statistics feature on your 123-reg hosting package.
This is because the traffic for your website will not be directed directly through 123-reg. It will go through the Google server then to 123-reg. This means that only 1 or 2 hits will show on your website statistics pages as the Google server will only show as 1 hit and 1 IP address.