Ok I have some problems and questions

[joximu]

Sorry - I don't get what the role of server.strawberrymilkshakes.co.uk should be.

If it's just a default page from debian, then you might setup a vhost for server.strawberrymilkshakes.co.uk with document root /var/www/default or where ever the files are (I would not suggest to set the document root to /var/www).

Well, it's all a configuration of apache - your ispCP is working as expected.