Well my experience of VS contacting me after a flight cancellation is not that good, but VS should contact your hotel with details of when you are due to meet up and fly out.
It will depend on when LHR reopens - keep an eye on the website
www.heathrowairport.com for details about it reopening.
I was listening in on Shannon control this evening... I did hear your plane go over there, trying to find a home for the night (at that point both Shannon and Dublin were already full, as were most UK airports).