I'm not sure where you've registered ttpics.co.uk and where it's set up but I checked the nameservers for it and didn't get an answer in the format I expected for a hasweb account (nsxxxx.dizinc.com). Check out the following page to find out what to set your other domain details to before you add the domain to your hasweb account.
http://forum.hasweb.com/index.php?showtopic=1468