I emailed the organisers re the status of Beachy Head entries.
I received the following reply:
Entries are no longer open via the Runners World site but you can still enter using the link below and clicking the green ENTER ONLINE box.
Kind Regards
Anita
Sorry, I didn't pick up the link from the email and post it here, but it can be reached via the event website. Cost will be £32. Obviously Eastbourne is saving on the RW online entry fee!
I shall email back and suggest they remove the 'Runners World enter online' box, as I (and I think a few others) assumed it meant the whole event was full, when it clearly it is nothing of the sort. (BHM website shows c1500 places left.)
Hope this helps anybody who's still confused!