Hi GreenbarnNot sure about Schofields who have a policy aimed at the UK traveller; I've read through the small print but it's not clear to me if the policy would cover adverse weather - I suspect not.
Just to confirm our policy does not cover cancellation due to 'adverse weather conditions' i.e. snow.
I recall this was also discussed last year during the big freeze,
It appears that Windy's suggestion J.L. Morris covers this:
PhilipCover is provided for inability to reach the holiday destination due to adverse weather conditions