If they are truely glowing maybe he got them from N.wales or Cumbria!
Or Scotland!
Remember we had restrictions put on some of our hill farms after Chernobyl too. In fact I think there are still farms with restrictions on them.
I was doing a hill lambing in Glenlochay that year, and it rained the whole time. It was so bad that we eventually stopped going to the hill as the risk of lambs being swept away in the torrential hill burns was too great. So we left the ewes to it in the hope that they wouldn't move around too much with young lambs.
The farmhouse water supply was straight off the hill and, after sifting out the frogs and debris, we ate our breakfast and drank our tea while we listened to the breaking news about Chernobyl on the radio. The farm I was on, and the neighbouring farms all had restrictions placed on them thereafter. The lambings were disastrous, due more to the rain than the fall-out.
I'll never forget being constantly soaked, and the roar of the water coming off the hill and down the glen.