December General Election

A pretty stupid idea but needs must apparently (allegedly) ,my questions  are thus .... given the HIGH chances of weather playing its hand what mechanism has been put in place to ensure everyone who wishes will be able to vote without it causing undue risk or stress can do so .Also how many elderly people do you that uses postal voting ?         I have had a look at the process online as i have not seen it advertised ,one would think the GOV would have advertised the process or even sent everyone over a certain age the information they need ,inform the electorate that if they wish to use postal voting they must register a form ,you need to get a form and then send it in no later than 27th of November . Reason i mention is the currently large parts of the country are affected by what could be called adverse weather and by DEC 12th it could be much worse and i can see it becoming an issue . It was a bad idea to hold a general election in Dec imo and if the country is adversely affected by a big  extreme weather event i see nothing sensible in place to make sure people can easily register their vote or even have the election cancelled .Current voting procedure needs updated ,modernised imo and made more secure and user friendly .