Don't think there's any suggestion it's moved this far north Sally. I suppose we should hope it does over the summer.
I think we won't know, jaykay, until all the ruminants have produced who were in the first third of their gestation when the midges were last active - they're mapping the spread by monitoring cases, not by testing midges.
A lot of stock would have moved about the country in August / September (tup sales for one) and tups from down south could easily have unknowingly brought the infection with them and infected the local midges. In a normal year (whatever one of those is now!), that would have been too late in the season for there to have been any spread into the local ruminant population. But last October / November, we had a really warm snap, warmer than the summer had been, and there were midges about. Our ewes were with the tup then and will start lambing next week... Cattle who were in their first third at that time will be calving from April.
So whilst I know that, thankfully, it is extremely unlikely that we will see any deformities or abortions due to SMV this spring, I do think we can't be certain that we won't until we get past Easter.
And yes, from a sheep point of view, let's then hope they get infected in the summer, get immune then, and consequently don't suffer these effects from exposure during subsequent pregnancies.
Sadly, from a cattle point of view, infective midges in the summer could mean deformed calves and caesarians for cattle calving from December 2012 through June 2013...