Sorry I didn't post an update sooner. It slipped my mind.
7 days came and went and still no email. I phoned at 8am on the 8th day and managed to get through to someone in the UK this time. My email accounts had been migrated but not re-activated. It took the guy 2 mins to sort and now my emails are working again.
I did however loose all emails that were sent in the previous 8 days, as was mentioned in a previous post, but I'm pretty sure that emails wern't returned to the senders as I did a test from a web mail account and the email didnt bounce back.