From FB:
It is with great sadness that we announce that David Sylvian will be unable to undertake the scheduled tour in March and April 2012.
David has sustained a lower back injury that is causing him significant pain and affecting his mobility to such a degree that, at this time, he will be unable to perform.
We are hoping that with medical care his condition will improve siginificantly, and that we'll be able to reschedule the tour at a later date. We're doing all that we can to bring this unanticipated setback to a positive conclusion.
David will be writing a personal note that we will post online shortly.
In the meantime, should any of you wish to return your tickets for a refund, please contact the venues / agencies from whom you purchased your tickets. They're currently being made aware of the situation.