Agree with Arabian on that... Basically, it's QE time with no more rate cuts. I think people (including myself) didn't expect them to do QE while rates are above 0. I can see now that they don't care about little things like that any more. On top of this, FRA/SONIA has been going bonkers again (for a whole variety of reasons), so basis widening is to blame for some of the selloff.
On a a sidenote, big question with QE, of course, is what sector paper they buy. Apparently, the minutes state that the DMO will issue what the BoE will buy and vice versa. Sounds like chicken and egg to me, so I find myself very confused about gilts here.