Well, I can only speak from my own experience. I certainly do discharge my duty to advise clients of the option of mediation. However, I find that the vast majority of my clients don't want mediation, or can't afford it (mediation is not free for those ineligible for legal aid), and most of those who do try it find it unsuccessful in settling the matter - so mediation often simply results in delay and wasted expense. Don't get me wrong, I'm not saying mediation is a bad thing - it's just not the panacea many people (and government) seem to think it is. And I'm certainly unhappy that solicitors are once again getting the blame for failure.
Incidentally, perhaps I'm being pedantic but I was amused by a mention of this report on the BBC this morning. The presenter said that "couples who divorce should resolve their differences without going to court". Quite how they get their divorce without involving a court, I don't know.