Today I tried again, at 11:20 am and got the same response. Basically, it's like they're saying "We're open but we're closed".
Way to go UK! Maybe the new Foreign Secretary will sort things out? I don't think so either.
Oh, and their English language contact page lists a different ambassador than the Romanian and Russian versions. Two ambassadors? One for those who speak English and another one for the others? Interesting...
Edit: I managed to get through after a dozen or so attempts and they said they had a problem that was now fixed. As far as I remember, last year the answering machine lied to me too. So maybe it pretended that it was fixed :)