I remember being told one snowy winter a few years ago, you can go home on a weekend providing you WILL be back Monday 07:30. There's no defence for not being in work, look at the weather forecast before you leave and if theres a risk of you can't make it back due to snow and ice then don't go.
bus/hitchhike/ mates car/ ask Mummy
Does anyone still hitchhike today ? Good luck trying to get from South England to Lossiemouth.