Thanks for that gnomad. I've just had a call from the organisers saying that they have had to cancel on grounds of public safety and that they are devastated. They will be in touch with ticket holders on Monday to arrange a refund or a rescheduling of the event.

I've just found out that the campsite I was going to in Northumberland, after Pickering, is also closed until at least Wednesday becuase of waterlogging so it seems my summer hols are a total washout!