Yes, it will.

If you are not logged in to the site, it will remain for 4 hours.

We would recommend that you register an account here, and your basket will remain for 1 year, rather than 4 hours.

You can register by clicking here if you don't already have an account. Registration only takes a moment.  A valid email address and a username is all that's required , but for reasons of security we need to confirm your identity by sending you an email, to which you must respond in order to activate the account. Read more here.