ILOVEMCO
You're not alone! I applied for the job last year, but wasn't successful. Then on June 10th 2010, I sent in this years application and received the automated reply telling me they'd got it and will get in touch. From last years experience, I know they can take up to 3 weeks to reply, so I gave them that long. No email came, so I replied to their email, as it says you can. No reply after 3 weeks. Sent another email, no reply.
Then on the 13th August, I went onto atcocareers.co.uk and used the contact us function to send yet another email. SUCCESS! A REPLY! They don't know what happened to my application and are trying to find it, but a least I know something i happening.
Basically all I'm saying is hang tight and pester them if necessary. You will eventually get something! Overall, it will be beneficial in your interview to say you persevered...shows how much you want the job (well thats how I'm looking at it anyway!)
Good Luck!
Binbrain