We van all year round and also find the Alde heating great when it gets really cold.
Only concession we make during winter is using a fully serviced, hard standing pitch.
We were out in 2018 (I think) when the Best from the East hit, no issues whatsoever as we were in Love to Stay in Shrewsbury and they really looked after everyone, even allowing us to leave the van there for an extra week free of charge until the snow had cleared.
As with others, use propane and lag your water pipes and most of all, enjoy yourselves.
Kev