In light of the recent severe weather, and associated disruption, I strongly advise that all passengers check the status of their local service before attempting to travel tomorrow. In light of this, here are the sources to check for major local operators:
Nottingham City Transport are updating a ‘Snow & Weather Disruptions‘ page on their main website, promising updates from 05:00 on Wednesday morning.
TrentBarton are posting service updates to the MANGO facebook page, with updates promised from 06:00am on Wednesday morning.
Premiere are updating the main Facebook page with any disruptions. They state that they are intending to operate all services as normally as possible.
Centrebus Grantham have a page on their website listing service disruptions.
The Delaine have a Route Watch page on their website, listing any disruptions.
Hunts of Alford are reporting any disruption on their website.
Norfolk Green have a Twitter feed listing any disruption.
PC Coaches are listing disruptions on their newly improved website.
These are all the disruption pages I can find at present. For operators not listed, I would advise contacting them directly – even for those listed, if you are unsure of whether your local service is affected, I would advise contacting the operator directly.