Re: don't go with just one supplier
As a home based worker most of the time I got an Openreach based ISP connection as a backup to my Virgin media (consumer) connection. Put them through a dual WAN LinkSys router and I have a load balanced and fail resistant network. Some websites get funny as my IP address changes during the session, but surprisingly few.
Connections are 350/35 on Virgin and 78/19 on the FTTC one, overall cost much less than a business line from one - which wouldn’t help with outages anyway, just might mean more info and compensation.