I've checked ours, looking mainly for the dark streaks down the stems, leaves are all off now.
fingers crossed everything looks OK
What I can't understand is why we import ash seedlings, they wild grow by their hundreds near my parents house, we've been pulling them up as weeds!
I believe the nursery we used uses home grown seeds / seedlings collected from around the UK (as on their website), I presume this is why our local 'green' group get them from there.
Let's hope we can get on top of it before it wipes out the 90% expected.
If everyone takes note and is careful, watches and keeps an eye out for infected trees while out walking there still may be a chance of reducing the impact. Getting that through to the general public who don't know one tree from another will be the problem.
Maybe I'm being too optimistic but let's hope forthe best.