At about 2pm this afternoon I posted to the effect that anyone who wanted my mobile number could email me, and to date precisely no people have responded - including the person to whom I followed-up (I'd have sent it to him if he bothered having an email address anywhere accessible). I hope everyone is confident of where they are going!
Update (13 July): this person did in fact email me, but for some reason the email sat in his outbox instead of being delivered. Oh well - everything turned out OK in the end.