[General Maximus]

I would look at the T&C's and see whether you have to actually be registered as a business (sole trader or otherwise) in order to be able to subscribe to a business service. The only downside I can think of is that business customers have you use a specific router which doesn't have as high a throughput as the shub. Before you decide anything I would give retentions a ring and tell them you want to cancel because you know your price is going to increase and see what deal they offer you.