Well this is an utter joke. After ringing Great Run I've been told that they only send out deferrment reminders via email, none of which I've received.
They don't utilise any other form of notification, no post, no phone, just email, and take no responsibility if that email is not received for any reason.
I've now been told that since I didn't reply to the emails I never got, I haven't got a place, and it's tough f'ing luck.
Wonderful, that's £45 well spent then. You'd think for that amount of money they could stretch to a recorded postal reminder, or something that wasn't as fallible as email to help ensure deferred runners get their place. I was helpfully told that I could now apply via a charity place!